How would you configure your database?

How would you configure your disks with those specifications?
General Database Characteristics:
os is Oracle Enterprise Linux 64 bit
Enterprise Edition
180GIG size database.
High "oltp" environment.
Estimated growth of 40 to 60GIG/year
20GIG of archivelogs/Day
Flashback time is 24 hours:120GIG of flashback space in avg
Local backup. Full database copy, then incremental is the preferred method.
That way, if a datafile goes bezerk, replace with backup datafile then recover.
Or if only a few corrupt block, block recover with rman.
BTW: Backup is done locally first, then send to another server, than on tape.
Archivelogs is duplexed on another server.
General Hardware Info:
Server Platform: Dell PowerEdge 1950
16 GIG RAM
2 * 64 bit CPU's
2 * local 300G/15rpm disks
Storage: Dell PowerVault MD3000
15 * 300G/15rpm Disks
Possibility for 17 disks here.
Here is my configuration so far:
OS+ oracle binary + Online Redo Logs Copy 1 + Control File Copy 1: 2 disks raid 1
flashback + backup + Online Redo Logs Copy 2 + Control File Copy 2: 4 disks raid 1 or 10
archivelogs: 2 disks raid 1
Temporary Datafiles: 1 disk no raid
UNDO Datafiles: 2 disks raid 1
Datafiles 6 disk raid10
total 17 disks: + spare disks on the side of one ever fails
1) How would you configure it with those specs?
2) Is there missing info to make a particular decision?

Here is my reply concerning data separate from index files:
See http://www.dizwell.com/prod/node/751 for the complete article.
"Why wouldn't you keep indexes separate from their tables?! Because doing so makes no difference to performance... and I patiently explained that a table and its index are never accessed simultaneously by a single user so that contention between them cannot arise. And yes, in a multi-user system, of course the two could be accessed simultaneously -but so could two tables, or two indexes. "

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I would like to make a database server on Visual Studio which can be accessed by other computers as well. I know how to make a basic local database but please can somebody help me with this. Thanks!
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