Nice setup, here are some of my thoughts:
- 8GB memory is totally overkill. For a machine who's primary role is media copying and playback, 2GB would probably have been enough, and 4 at the most. Tom's hardware did an article about how adding more than 3GB ram gives diminishing returns unless you are doing something very demanding like 3D modeling/rendering.
- If you are not gaming on this machine, then the Radeon 4850 is overkill. Even the 4550 (approx $40-50) can smoothly playback 1080p. If you are gaming, however, then good choice.
- I can see your desire for lots of HDD space, but unless you intend to fill all 8GB right away, you spent a lot more money per GB than you needed to. If you were willing to sacrifice half that capacity, even four 1TB WD drives would have only been ~$400, saving a whopping $800. Half the capacity but only 1/3 the price.
Otherwise it's nice.