New to HD Editing and CS, building a PC to suit requirements of HD edit. Experienced help wanted :-)

Question

Firstly let me say hi and thanks in advance to all that read and assist with my questions
A Bit about me..
I have recently acquired the need for video editing at a much higher level with both having a family now (baby daughter) and a very active hobby (rc heli flying at a sponsored level).  With this in mind I bought a HD video camera some time back without the realisation that, to effectively edit such footage requires horsepower!!.... so i have saved up for a new computer and ended up here after much reading on various forums (toms hardware, video guys etc etc).
Where I am up too....
I have started by firstly implementing a NAS into my Home network which is primarily used to store and stream media (Gigabit LAN) around the home. It is setup in RAID 5 with 5 x 2TB disks (so about 7TB of storage).  I have done this so there is some backup of photos, movies, home video etc (if I lose a disk , hopefully i will not lose the lot).  I have also acquired adobe Premiere Pro CS 5 and now need a workstation that will allow me to edit in confort ( the one I have will not even run it!! .
My aim is to store original files and completed work on the NAS (or burn to Bluray etc).
I am looking at a PC solution, as I can obviously get more horsepower for less $$ than a laptop solution. 
I have built PC's in the past but not with high frequency and this will be the biggest budget one I will have attempted. I have been researching alot over the last few weeks about sytems and components and found this forum to be very good in dealing with hardware specs and requiremnts in a very proffesional way.
I am now at the point where I getting a little muddled with which way to go and still have a lot of research to complete.  My approach is to tackle each of the components needed one at a time in a fairly hierarchial manner.
What the PC will be used for..
This PC will be used primarily for the video editing and some gaming (when I have time).  AlLso any other horsepower intensive apps if needed (I have a laptop and other comps for general duties).
Budget
My budget is fairly rigid at $2500 AUD (so I am not looking at a Zeon solution LOL). The budget is to include:
Case                              ?
CPU                            Intel I7 2600K (based on my research this seems to be the best way to go with my budget and needs)
CPU Cooler                  Standard Intel supplied Cooler (seems to perform reasonably well even when moderately overclocking (~4.0 - 5.0 khz) 
MOBO                           ?
RAM                              ?
Graphics Card                 ?
BLURAY Writer               ?
PSU                               ?
HDD Storage               1 SSD and 3 HDD's with 2 in Raid "0"
OS                              Windows 7 64 Bit
23 inch Screen               ?
Questions
     Motherboard
I guess my issues with MOBO slection revolve firstly around which chipset to go with Z68 (newer) or the P67?  It seems the Z68 is feature rich, however I also seem to feel that the Quick sync and SRT would be better disabled with what I am setting the machine up for? So therefore what advantage is there with going with Z68 if any? or am I better off getting a more established P67 chipset based board?
I also see that some boards have the Nvidia NF200 for expanding bandwidth on the restrictive 16 PCIe lanes available on the 1155 socket boards given I am only looking at one decent Graphics card is this a chip I should avoid (as I have read this can cause latency with only one graphics card)?
Another thing I have noticed is some boards have a PLX PEX8608 chip which seems to manage the limited PCIe lanes better if other cards are plugged in?
I also see some boards have the Marvell Sata 3 controller on them that does not seem to perform as well as the native Intel Sata 3 controller on the Southbridge in tests.  I guess I have no real idea of when I would be looking at stretching the bandwidth and wonder whether I need to concern myself with 4 x sata 3 connections (2 intel and 2 Marvell)?
One last question I see there is now MOBO's available with PCIe 3.0 available (even though there are no devices that can utilize it) is this even worth being a consideration or is it not really of any importance to the slection process?
In summary it appears there is lots of goodies on offer with different chipsets and boards, however I do not want to waste budget on things I have no use for or gimmicks.
     CPU Cooler
It is my intent to start with the factory supplied Intel bundled cooler and invest the money not spent on this item on better graphics card etc. For moderate Overclocking it seems to perform ok.... am hoping this will be ok?
    HDD Storage
At this stage I am not up to speed with the exact storage devices I need, I am initially looking at whether my ideas for a storage system have merit? Please bear in mind I am not a CSpro user as of yet and so some of this is just based on research with no base knowledge....?
1 x ~120Gb SSD                                    for OS and Programs
1 x ??Gb/TB HDD 7200 rpm                    for Media Projects
2 x ?? Gb/TB HDD 7200 rpm in raid "0"    for Media Cache and Preview Files
Will the onboard Raid controller accommadate the above adequately?
    Graphics Card
I am looking at Nvidia as far as I can tell so that I may make use of the CUDA threads and as far as type I assume I pick the best one of the approved list (adobe approved list)?  I am still confused ast to whether there is any benefit from a using a twin GPU card, its unclear to me whether the CUDA can tap into both of the GPU's on such a card? Of course budget restraint will come into play here.
     Ram
I am looking at 4 x 4gb dual channel Ram cards to give a total of 16Gb total (DDR 3)  as for brands, types and frequencies I have no idea yet and need to cover off some of the above first before my research gets too wide?
     PSU and Case
I am hoping for a modular device for this, however I was thinking this and the case are a low priority at this stage (until some of the other solutions are verified).
     Blur Ray writer /reader
With me using my NAS for media streaming I will not be burngin to many Blu ray disks, however I will be reading a few so that I can upload them onto the NAS via this unit.  I have no idea what is a good or bad unit or what to look for in this area?
     Monitor
I have found some cheap solutions in the 23" sizing for a main screen (~160 AUD) supported by my existing 17' monitor, however is there anything I should be looking for in particular with the monitor I choose?
I will update each section with what is decided on so that it may help others who are having the same tough decisions to make?
Even if we just tackle the Motherboard first I would be greatfull...
Thanks for reading and again all assistance is appreciated.
Regards
Jody

Answer 1

Ok well after much reading I have got the following as the setup that shoe horns in at $2500 ish...
Interested in thoughts for Premiere pro:
Component Model $ each Stat Ice Store
Case
UNKNOWN AT THIS STAGE BUDGET $200
Power Supply
FSP Aurum Series 750W Modular Power Supply $139.00 PCCASEGEAR
Motherboard
ASUS P8P67 Deluxe REV 3 $212.00 I-Store
Processor
Intel I7 2600k Gen 2 $324.00 All needs Computer
CPU Cooling
Thermalright Silver Arrow CPU Cooler $89.00 PCCASEGEAR
Memory
G.Skill Ripjaws X F3-12800CL8D-8GBXM (2x4GB) DDR3 $79.00 $158.00 PCCASEGEAR
OS/Programs Drive
Patriot 120G Wildfire SSD SATA3  $289.00 Umart
Capture/work Drive
2 x  Samsung SpinPoint F3 1TB HD103SJ setup in Raid "0" $54.00 $108.00 Green Box IT
Render to Drive
2 x  Samsung SpinPoint F3 1TB HD103SJ setup in Raid "0" $54.00 $108.00 Green Box IT
Dual/Quad Head Video
Gigabyte GeForce GTX 580 Super Overclock $589.00 PCCASEGEAR
DVD-RW
LG BH12LS38 Optical Media (OEM) $68.71 Mega Buy
Operating System
Windows 7 64 Bit Pro $129.00 Umart
Monitor
Samsung S23A300B 23in Widescreen LED Monitor $149.00 Netplus  $2,362.71
Total
This will be supported by a 10tb 5 disc NAS on Gigabit connection for long term secure storage.