Looks pretty full that rig M.D.K.
Been thinking about the same (Seporate CPU setup + NB GPU setup). In my Raidmax Tower. I have made room for it, but have not desided if it`s worth it or not (DD Z-chip - Magnum GPU - DD Floppy reservoir - L20II - Waterchill Radiator Rev1 - DD Z-chip + CPU block - Custom Tank - Aquabee UP2000L - Black Ice Extreme Chrome - CPU block).
I will loose the bottom PCI`s though, since I have to place a pump there. And I am not sure if it actually is worth it compared to using the same radiator btw the CPU block and GPU/NB (CPU - Black Ice Extreme Chrome - GPU - NB - Tank - UP2000L - WC Rev1 Radiator - CPU). I have room 4 a custom tank btw the Motherboard and the UP2000L pump at the front (simular to the Eheim push on reservoirs).
Anyways nice setup