General not too bad. What is your budget total? ~$475? I would use a different PSU, if I were you. Here is probably the minimum that I would use for your build. Look at both links.
8800gtx on 380w Antec PSU!http://www.overclockers.com/articles1452/
PSU - $49 shipped! $38 with google chekcout! Can power 8800gtx and an OC’d e6600! See link above for proof!
Antec Earthwatt 380W P/Satx 12V v.2.2 80MM P/S2 Fan 80-Plus Certified - EA380http://www.buy.com/prod/antec-earthwatt-380w-p-satx-12v-v-2-2-80mm-p-s2-fan-80-plus-certified/q/loc/101/203477214.html
You know the 8800gt's and 2950's are coming out soon, right? Not sure when your buying, but right now I'd wait a few weeks to see how things pan out. Possible price reductions on current GPU's could happen, thus giving you more $ for other parts or better parts.