A couple of things to consider I guess.
1. Noise - Do you want a quiet case, if so go for a good quality case and get good fans also. There are some quiet PSUs also.
2. CPU - You most likely won't use all the performance from that cpu before multithreading becomes mainstream anyway so maybe consider an AMD quad or tri core or even an X2 and pocket the savings for later. Plus you get your mobo for cheaper, and this leaves you with an open upgrade path. Socket 775 is dead from the end of this year anyway.
3. You might be able to get a great deal on an 8800gts as they are EOL, they are dual slot so the 100-150 watts of heat from the video card gets exhausted out the back. Its better for the system and the cost difference isnt much more than a decent ATX fan anyway.
Tease.
