That is a wonderful reason.
The only change I could think of to your build would be to replace the HDD with the WD 640GB (WD6400AAKS). It will be more expensive ($130 instead of $100), but the performance is supposed to be great. I just built a machine with one, but haven't had the time to do proper testing to let you know for certain. I'll post some results when I get them (since my build is nearly identical to yours).
The only change I could think of to your build would be to replace the HDD with the WD 640GB (WD6400AAKS). It will be more expensive ($130 instead of $100), but the performance is supposed to be great. I just built a machine with one, but haven't had the time to do proper testing to let you know for certain. I'll post some results when I get them (since my build is nearly identical to yours).