I'm not too familiar with AMD but these components seem pretty damn good. I think you should get your 8 gigs of ram in the form of 2 sticks. Also, get a different mobo. I'd recommend the ASrock extreme4 motherboard (http://www.newegg.com/Product/Product.aspx?Item=N82E16813157262).
It's only $50 more and it's compatible with RAM over 1333mhz. Plus, it's a better board for overclocking.