Can I have some helpful criticism on this gaming computer I want to buy?

This is the link. http://www.cyberpowerpc.com/saved/1DBEXQ -I'm looking for a great gaming computer for my birthday on july 20th and my limits about $1200. To be honest I have no clue what to get but i know i really want to game hard and I'm sick of this hot box of a computer in my room... Its a dell xps with a 9800gt in it lmfao, no ventilation and one 120mm fan for the cpu... i hug it for warmth... please help me anyone I need a new gaming computer i was thinking crossfire might be cool thats why i put the dual 6870's on that build. If someone could modify it for the best it would be greatly appreciated.