Pics of the setup right now (waiting for my CPU in RMA). I only have one MCW60 in place right now because I removed a few for another project. Notice the GPU off on the rad to slap in place if needed? The NB block is tucked behind the big rad, but still attached to the rad.
Draining the loop is as simple as popping the top off the Rubbermaid.
Piece of plywood on short legs is my "custom" bench station.