well here are some suggestions...
1.Don't ever use power supplies that comes with the case unless they are good. Check this post to see which power supply is good : http://www.techist.com/forums/f76/up...-guide-137927/
2.I would reccomend getting one of those P35 motherboards if you aren't gonna get 2nd video card but if you are going to in the future i suggest you to keep that selection.
3.Well high definition sound card... i don't know alot about sound cards but if you are planning to get one then buy some 7.1 speakers when you're getting them or else it will be a waste using a $5 crappy speakers on high definition sound card.
4.I'm not sure if that's good but i reccomend samsung 22 inch monitor or sceptre as some of the people in TF here have.
5.You might want to wait until E6750 comes out in around 3 weeks from now but if you really want it in like less than a week then go for it but i strongly reccomend you to wait for another 3 weeks to get E6750.
6.Get other techies in here to help you... I'm not 100% on everything and this is what i reccomend... others may reccomend my configuration but it's up to you what you're gonna get and what you're gonna pay.