Get this ram instead:
Newegg.com - G.SKILL 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory - Retail
highly recommended...awesome for overclocking.
And 700W is too much power for your rig.
Look at the Corsair 620W. or OCZ GameXStream 600W.
The motherboard is unnecessary. There are other motherboards that are cheaper and just as good. Like the MSI P6N Platinum. But it's your choice.
And you can get more bang for your buck, if you just get two Seagate 320GB 7200.10 rpm drives, and RAID 0 them. It will yield about the same performance as a raptor, but much more space for the money. I see you're RAIDing two raptors. Again your choice.