Well I made some changes.
Found another PowerColor 5870 LCS on ebay that I couldn't resist buying since they rarely pop up...
It arrived within 2 days, so while it was in transit I ordered more PrimoChill ICE coolant overnighted from Amazon and last night re-did my loop...
OF COURSE THOUGH, the 2 PCI-E 16x slots on the X58A-UD3R are too close together to do a piece of tubing between the two cards and I didn't even think of getting SLI/CrossFire fittings, so I had to do some fancy loop-work to get the two cards together. I could have kept the system apart and ordered some, but I needed to get the system back up and running ASAP as I do use it for work. The big connecting loop to the left might just be temporary, however my temps are good, quite good in fact; just not crazy bout how it looks... too much tubing just to connect 2 devices which are right atop another.
I also changed the order... Loop is now: Reservoir > Pump > Radiator > CPU > VGA1 > VGA 2 > Reservoir.
Surprisingly, even with now having 3 components on a single RX360 Rad, I'm still getting good temps, actually... temps dropped a few degrees perhaps due to changing the loop order. I still have my fans turned down too.
Had no issues getting Crossfire working either, so I'm pretty happy.