WOW that case is a monster. HUGE. That paint will look nice on a big case like that. you should put lots of fans and lights in there to show off all the hybrid glory that you are creating.
As for your RAID its pretty simple. Basically (As far as my knownledge goes) There is 3 ways to do RAID. RAID 0 (Striping) combines 2 harddrives and makes them into one, reading and writing the data too 2 hard drives instead of one, thus making it faster. An example of how RAID 0 improves preformance: I have a friend (this is going off his word too, so i dont know how accurate it is)... He has a 3.0ghz 64bit athalon or something expensive like that, and he has 2 WD Raptors (Which are damn fast drives) anyways he claims that he can go from the windows install boot to the desktop in 8 minuets, supposidly 3 or 4 times faster than a regular drive. With RAID 0 you can expect atleast 2x preformace for load times.
RAID 1 (mirroring) is where the file is writen to each hard drive at the same time, making a prefect back up. IMO this is only necessary if you have important files you CAN'T lose (corporate docs... ect..) The neat thing about it is ive been told you can hot swap or something to that nature, where the drives will automatically keep themselvs identical. So you could run it with only one hard drive, and then when you put the other one back in, it would automatically update itself to mirror the previous drive.
The last RAID option i know about is RAID 0+1 (Mirroring and Striping). This takes 4 drives, 2 to stripe and then another 2 to mirror the strip. Good preformance, great security. LOL its can be expensive though.
Anywho thats my thoughs on your case and RAID. Happy Modding! :cool: