i agree with the pedster, get 640 gig drives, and that ram isnt needed if your not overclocking get some geil black dragon perhaps? you should get an arctic freezer pro 7 if your not overclocking, much cheaper. include some thermal paste in your build?
another vote for the antec 300 too, but for the standard of the rest of the components you could get something a bit more classy, maybe a lian li?