That system is great! I went with the PC Power and Cooling 750 watt quad. My gosh, just the quality you see before you plug it in is great.
The new system I built uses an MSI P45 MB, e8400 chip, OCZ 1066 ram, and of course the Quad 750 watt ps. My gaming machine uses an e8500 chip overclocked to 3.8 ghz. It has an abit mb and DDR 800 ram. I forget the ps. It must work though. Still if I get a few extra bucks I'm going with the PC Power & Cooling PS in the future. I also use the asus DX sound card. It seems to work.
If I could encourage you to do 2 things I would push the e8500 chip, nothing wrong with the e8400, and the PC power and cooling PS. The thing about the E8500 is that if you like to overclock you can take it to 3.8 ghz rather easily since it has a 9.5 multiplier.
Good luck on the build. Keep us posted.