You want to Spend 249 Bucks on a Power supply and you choose Cooler Master? OMFG ROFLalicious!!!!!!
If you wanna go over kill on a power supply at least choose a Good brand Like
PC Power and Cooling
However this Power supply is more than enough to power that Rig and it tops the list in quality.
Also the rest of your build is over Kill.
E6600 (Sycthe Ninja + Artic Silver 5 + 120 MM Fan.
2 GB's Corsair Dominator DDR2 800
8800GTX (Wait to see how the R600 Cards preform, so either buy what I suggested or wait till benchmarks and extensive testing)
Keep the Raptor And Get a 250 or 320 GB Seagate SATA 16 MB Cache Drive as Storage.
As for the Optical drives...
Two Plextor, Optorite or samsung DVD Burners
Audigy 2 ZS or X-fi