New/building computer doublecheck

[Sofaspud]

4 CORSAIR Vengeance 4GB 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model CMZ4GX3M1A1600C9B

Item #: N82E16820145346

That sort of concerns me, because if I'm reading it right you're intending to put 16 GB of RAM into this machine.  While undoubtedly awesome, that's (a) overkill, and (b) past the limits of the basic Windows 7 install; you'll need to make sure you get at the very least the Home Premium edition.  64-bit, obviously.
Did I mention (a) overkill?
Still, that'd be a fun rig to play with, and if you have the budget and the cooling (water-cooled case is a good call here, I'd say), you should be able to scream along beautifully.

--sofaspud
--"Listening to your kid is the audio equivalent of a Salvador Dali painting, Spud." --OpMegs