Get a better brand of 6950 HIS has some issues and you can get an ASUS or XFX for about the same price. I would dump the ram in favor of a better performer as well. Get something that is set to run at 1600 with a CL8 or 9 rating.
Ok, couple things I would change the memory for DDR3 1066 to 1333 or faster. This looks like some good RAM http://www.newegg.com/Product/Product.aspx?Item=N82E168... for you. The power supply that you have listed is very good it is one of Eggxperts Tier 2 (very good) power supply and should provide all the power you need for this build. Overall I think that everything looks good.