I've quit PC-hobbying for some time now but if you're interested, here's how I was cooling the 2 x 172s, 1 x 65 and 1 x 80w pelts and the water.
I know you dont have room for that. If you're in for a detailed read about it, you can go here.
http://www.overclockers.com/tips1003/
http://www.overclockers.com/tips800/