I disagee with p55 on the WD being the second choice. The Seagate 7200.12 500 GB is the next best choice to the F3.
Another problem is that you choose triple channel RAM (3x2 GB). You need dual channle (2x2 GB). Also, Corsair's sticks are over priced. They're really expensive, but don't give you a whole lot. Especially the Dominators. Switch to the G.Skill Ripjaws 2x2 GB 1600 mhz CAS Latency 7 (Newegg's price: $115). These are likely to be faster, and definitely cheaper.
You might be able to bump up the GPU to an HD 5870 with that change. If not, it's definitely worth switching to a slightly cheaper CPU (the 955 or X3 705e) to afford it (assuming this is only for gaming).