Hmmmm...this is VERY impressive alright, nice workshop you got there I'm seeing too many of these mods, I want to make a case myself.
As for your watercooling loop, parallel rads will be difficult because of the size of the case. I'd flip the pump sideways, so the inlet barb is pointing straight at the res, and have the pump either pump right into the 120.2 rad, or right into the CPU or GPU.