Ok, so I got some industrial strength velcro for the pump, got everything hooked up, and started filling the loop.
Everything went well for a while, then....a leak. Of course the one fitting that leaked was the one on the BOTTOM of the reservoir!
I tried tightening it in place, but it was still leaking, so I flipped the case over and started pulling it apart enough for me to fix it...working on that atm.