That's a helluva system. But I gotta ask, why?
You could build a PC that would handle every game fine for half the cost.
Another thing to think about is Intel's new line of CPU's are coming out here in a month or so. And if nothing else, that is gonna lead to price drops on the current stuff out on the market now.
But I would wait for the I7, and the X58 boards. They are gonna be insanely fast..
Just my two cents