Forgot about that part :P...
Anyways Centurion 5 is a really good case for the money, that power supply isn't worth it for $110, and I would get an SATA burner.
I would get this power supply: Corsair HX Series CMPSU-520HX 520W Power Supply at ZipZoomfly
Way better then the Hiper and cheaper too.
Any SATA burner will do.
The 8600GTS is a bit lacking in price/performance compared to the last-gen DX9 cards but it does have DX10 and being newer tech, it uses less power, less heat, has way better video decoding (even better then the 8800 cards) etc. so it's a decent trade off. I'm in the same situation as you for the graphics card and I'm going for an 8600GTS. Just know that you can get a waaay better for $250 ($215 deals have happened a couple times already) in the 8800GTS.