Im in the same boat as i want to do 2 loops, one for the CPU,MB and 3 480GTX blocks using 2x DDC pumps and another loop going through 2x ThermolChill PA 120.3 and a HLabs 480GTX rad using a dual pump as well. Just put together my HUGE black Extension Ascension with Horizon MB tray today and just wanting to order pumps/tops and some fitting and its rock and roll time! Black and red theme all around.. cant wait to show it off heh.