I would also recommend going AMD but if you prefer Intel they'll do the job to.
As for your video card what 6800 gt are you going to get? I personally, would recommend getting the BFG 6800 gt.
The reason why is because of the Lifetime Warranty and 24/7 Free Live Tech Support. No other manufacturer offers that! As a bonus it comes overclocked out of the box. So if you're arent the type of person to OC your hardware thats a bonus as well.
Good luck on your new system!