Need help on network design

Hi guys.
Looking for some advice on a network design.
Please tell me what you think may or may not be wrong or missing.
Here are the details:
The user count is approximately 600 (desktops, laptops and Cisco IP phones) with two locations (office and data center) connected via 100Mbps guaranteed MAN line with site-to-site VPN as backup.
Servers will all be in the Data Center.
Edge routers to be used as site-to-site VPN connection point between office and data center.
Edge router at data center also to be used to connect to 4 other remote sites.
Edge networks (router and ASA) will be used to provide internet access to equipment at their respective locations. (No routing across MAN for internet access)
Cisco 4510 to be used as user switches.
Supervisor engines will be connected via 10G fiber to core switches.
There will be 2x 10G connection for each supervisor module.
Core switches are 4500x to be stacked via VSS using 10G Twinax cables.
Core switch will also have 1G copper sfp to connect to MAN line hand-off.
There will also be a physically (for the most part) segregated network using 3750x
switches that connect back to the core. We will use 1G Fiber connections.
Here is the current kit list:
Office Network Edge
1x Cisco 3925 Router to connect to internet and vpn tunnel endpoint (CISCO3925-HSEC+/K9)
1x 2GB RAM upgrade for Cisco Router (MEM-3900-1GU2GB)
1x 1GB Compact Flash for Cisco Router (MEM-CF-256U1GB)
1x ASA Firewall w/ IPS (ASA5525-IPS-K9)
Office Network Core
2x 4500X 32 Port Switches (WS-C4500X-32SFP+) w/ IP Enterprise License
2x 1GB Fiber SFP module per 4500X switch to connect to 3750x (GLC-SX-MMD)
2x 10GB TwinAX cables to stack 4500x switches together (SFP-H10GB-CU1M)
8x 10GB Fiber SFP+ module to connect to 4510 Sup Engines (SFP-10G-SR))
1x 1GB Copper SFP to connect to MAN circuit hand-off (GLC-T)
1x 1GB Copper SFP to connect to ASA firewal (GLC-T)
Distribution
4x Catalyst 4510R+E Switches (WS-C4510R+E) w/ IP Base License
2x Supervisor 8-E per 4510 switch (WS-X45-SUP8-E)
8x 48-port PoE module per 4510 switch (WS-X4748-UPOE+E)
4x 10G Fiber SFP+ module per 4510 switch (SFP-10G-SR)
1x 2GB SD Memory card per Supervisor Engine (SD-X45-2GB-E)
Office Network Segregated
4x 3750X 48-port PoE Switches (WS-C3750X-48P-L) LAN Base License
1x 1G Fiber SFP module per 3750x switch (GLC-SX-MMD)
1x Slot module per 3750x to connect 1GB SFP modules (C3KX-NM-1G)
Data Center Edge
1x Cisco 3925 Router to connect to internet and vpn tunnel endpoint (CISCO3925-HSEC+/K9)
1x 2GB RAM upgrade for Cisco Router (MEM-3900-1GU2GB)
1x 1GB Compact Flash for Cisco Router (MEM-CF-256U1GB)
1x ASA Firewall w/ IPS (ASA5525-IPS-K9)
Data Center Core
2x 4500X 32 Port Switches (WS-C4500X-32SFP+) w/ IP Enterprise License
2x 10GB TwinAX cables to stack 4500x switches together (SFP-H10GB-CU1M)
3x 10GB Fiber SFP+ modules per 4500X switch to connect to 3850 switches (SFP-10G-SR)
1x 1GB Copper SFP to connect to MAN circuit hand-off (GLC-T)
1x 1GB Copper SFP to connect to ASA firewall (GLC-T)
1x 1GB Copper SFP to connect to segregated ASA (GLC-T)
Data Center Distribution
6x 3850 24-port PoE Switches (WS-C3850-24T-S) IP Base License
1x Slot module per 3850 switch to connect 10GB SFP+ modules (C3850-NM-2-10G)
1x 10G Fiber SFP+ module per 3850 switch (SFP-10G-SR)
Data Center Segregated
1x Cisco 2951 Router to connect to internet and vpn tunnel endpoint (CISCO2951/K9)
1x ASA 5512-X (ASA5515-K9)
Attached diagram is just a draft.

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Posting
A 39xx is underpowered if you want to support gig VPN tunnel.
If your MAN is 100 Mbps (possibly "light" for 600 users), I would suggest running your port at 100 Mbps, not gig. (This because LAN switches don't shape, and may not be able to "see" congestion or drops within the MAN.)
You user edge (the 4500s) will be L2 or L3. If the latter, I would recommend not using a VSS core.
I would recommend not using the same Internet connection for both general Internet access and VPN.

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What I want the spreadsheet to do is to accept the data from meter 1 and meter 2 in side by side columns of cells. I next want the spreadsheet to compare the 2 bG values obtained from the same blood sample with these meters to one another and then divide the smaller value by the larger value to determine the amount in percent that one meter is higher or lower than the other.
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This is comparison is complicated by the fact that meter 1 will sometimes return the higher of the two readings, and at other times meter 2 will be higher. Thus it's not a simple matter of asking the spreadsheet to divide the result of meter 1 by the result of meter 2 each and every time or vice versa.
Next on the agenda I want the spreadsheet to put the result obtained by the above calculation in one or the other of two additional columns of cells. In other words the spreadsheet will compare the value of meter 1 to meter 2, divide the smaller value by the larger value to determine percentage, and finally place the result obtained in one of two additional columns of cells. One of these additional columns of cells would be labeled Meter 1 Higher and the other would be labeled Meter 2 higher.
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Niel's and Barry's report the percentage by which the higher reading is higher than the lower.
Brie's and Terry's report the percentage by which the lower reading is lower than the higher.
All put the results into the same cell (column) without regard to which reading is highest. (Barry's set includes labels to identify the higher meter.)
Here's mine again, with revisions to place the results into separate columns:
Labels in Row 2: C2: Meter A, D2: Meter B, E2: A Higher, F2: B Higher
Tests results in Row 3, Meter A in C3, Meter B in D3
Comparison results in E3 and F3
E3: =IF(C3<D3,"",C3/D3-1) Set the Number Format of this cell to percent.
F3: =IF(D3<C3,"",D3/C3-1) "
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Note2: As written, the formulas will return a #DIV/0! error if no results have been entered on that line. The version below suppresses any results until readings have been entered in column D.
E3: =IF(D3,IF(C3<D3,"",C3/D3-1),"") Set the Number Format of this cell to percent.
F3: =IF(D3,IF(D3<C3,"",D3/C3-1),"") "
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The default size of an AppleWorks spreadsheet is 40 columns by 500 rows. Go Format > Document... to increase the number of rows to 1050 to allow room for 'roughly 1000 tests.'
For 1000 tests, fill the formulas above down through rows 3..1002 (aasumed in examples below).
Next I want the spreadsheet to examine all the cells in which meter 1 returned the higher result and perform the following calculations:
lowest percentage over meter 2 obtained
highest percentage " "
The second is easy: =MAX(E3..E1002)
Place the formula where you want this result reported.
The first runs into a problem: empty cells, or those with non numeric data are evaluated numerically as "0" by the MIN() function. There is a workaround.
Use an empty column to the right of the active part of the spreadsheet. (I've arbitrarily chosen column M)
M3: =IF(E3>0,E3,1000)
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number of identical readings obtained
I'm assuming you mean 'identical differences' in terms of percent higher.
There are a couple of difficulties here:
1. AppleWorks does not include a MODE() function which would extract the number appearing with the greatest frequency.
2. What constitutes "identical" depends on the (mathematical) precision of the results. AppleWorks can display results to 11 significant places (eg. 12.345678901), and actually does the calculations to a few more places than that. Given that precision, many results that are not significantly different willl not be identified as "identical."
Probably doable, but more detail needed before jumping in.
average percentage " "
average deviation
Not sure what you're asking with these. Can you elaborate?
Regards
Barry

Need help creating network of 1 Airport Extreme & 2 Airport Expresses!

Please somebody help me! I've literally been trying to get our home network to function for months now. I'm seriously about to cry if i can't make it work.
Here's the situation:
Our apartment is long and narrow and probably has lead paint, so our wifi, powered by a brand new Airport Extreme Base Station 802.11n router (named Igor) connected to a comcast modem doesn't reach the whole house. So we got 2 Airport Expresses to place throughout the apartment (named Sven and Svetlana) to help boost the signal.
First i tried to set up Igor to 'Create a wireless network" with the option 'allow this network to be extended' and the connection sharing set to 'Share a public IP' and i set up Sven and Svetlana to 'extend a wireless network' and the connection sharing was set to 'share a public IP'. Everything else was automatic or default pretty much. I got it to work but the connection was really weak and dropped out a lot.
Then i tried setting up a WDS network. no luck there either. so i went to the apple store and they told me i had to hard wire them all together using ethernet cables (roaming network i guess) to compensate for the ****** network acoustics in our place.
So...i ran 1 ethernet cable from Igor down the hall to Svetlana and another from Igor further down the hall to Sven. I set up all 3 to 'create a wireless network' and gave them all the same network name and password. i left the 'allow this network to be extended' option unchecked on all 3 and put them all in bridge mode and automatic settings for the radio mode and channel selection. After about 50 restarts i finally got it to work. Things seemed great for a minute until i realized that my laptop was the only one in the house that could connect to the internet. When i tried to troubleshoot the problem using network diagnostics and restarts, i eventually got my roommate's laptop to work but then mine stopped working.
i've tried changing Igor's connection setting to share a public IP address and leaving Sven and Svetlana's in bridge mode. I've tried changing the 'configure IPv4' setting from 'using DHCP' to 'manual' and entering in identical info for all 3 in the TCP/IP section.
no matter what i do i still have no idea how to make this work for multiple devices in our apartment. I really don't understand that much about networking but i am great at following directions. Please please please please help me! I'm desperate.
thank you in advance for your help!
ilana

So...i ran 1 ethernet cable from Igor down the hall to Svetlana and another from Igor further down the hall to Sven. I set up all 3 to 'create a wireless network' and gave them all the same network name and password. i left the 'allow this network to be extended' option unchecked on all 3 and put them all in bridge mode and automatic settings for the radio mode and channel selection.
In a "roaming" network, the router connected to the Internet modem should NOT be in bridge mode. In this case that would be your 802.11n AirPort Extreme Base Station (AEBSn). That is because you want it to provide both NAT & DHCP services to both AirPort Express Base Stations and the network clients.

Need help on network design

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