So let me get this straight... you have 3 fans ontop of the rad pulling fresh air through the rad where it gets heated by the rad and forced into your case where 2 285gtx's are creating more heat along with your hard drive and motherboard.

Wouldnt it make more sense to:

Have the Side Fan and front blow fresh air in, set up the rad fans in a pull config blowing heated air out the top so the rest of your components don't get heated up more than they already are by the video cards?

Am i the only one that that thinks blowing more hot air into your case is a problem here? I'm no pro at airflow and water cooling but in my head this just creates more heat so if there's been some study done to prove me wrong, i'd like to know this because i'm planning a new setup soon and this will be my basis.

Other than that, I love your build and will probably copy the layout.