I was wondering are you picking ths parts off some website like cyberpowerpc.com??just a question...what size monitor and resolution you planning to use and is sli (adding another videocard)something you see doing in the future??if you answer is yes the power supply you picked is not enough.
I build a system about a month ago running at max resolution (20" wide screen dell monitor) 1680x1050 playing farcry2 with everything turned up high and it looks great.. system specs intel i7 920 2.66 overclock @3.6 asus p6t deluxe mb corsair dominator ddr3 6gb 1600domino A.L.C. coolit (temp 37c) first time with water cooling. this is a close system and for $75.00 is doing a hell of a job.ps corsair tx 750w/ i should have purchase the 1ooow for sli....oh well.WD CAVIAR 500GB HDCASE TEMPEST nzxt creative x-fi xtremegamer EVGA GeForce GTX 260 Core 216 Superclocked Edition vista ultimate 64-bit.the gtx 260 is good for 20 to 24" monitor.
good luck with your build take care.