Only a few minor comments:
1. That PSU is overkill unless you intend to do extreme overclocking and add multiple additional graphics cards. You could probably stand to come down to something in the 750-800W range and still have more than enough power.
2. I would recommend getting an SSD drive for your OS, and upgrading the HDD you have listed to a 7200 RPM drive for your game installs and media storage. Faster file access time is a nice boost to system performance for a relatively low cost.
Other than that, everything looks pretty good to me.