Omg! Jarl, dont talk about wc when u never own'd one! roar.
They are a thread Guts ithink made check this, u will find a ton of info. He mounted a THERMOCHILL 120.3 TOP - Swiftech 120.2 (220) bottom.
Watercooling Ram Is NOT NECCESSARY It Just Had Restriction to the loop, just buy an air cooled ram coolers...
i7 980x +120.3 Thermochill will keep him Cool!!!
As for Gpu. double sized rad will be as good as high end air cooler for GPU, dont expect the best temps, since u are underadding them but GPU are less sensitive to heat so...
EDIT here is the thread.
http://www.overclockers.com/forums/showthread.php?t=639546