Cam/Head Swap Disaster.......

Woah! I am feeling your pain on this one... Drain ALL the remaining coolant, including the side plugs of the block, and the oil. Flush the crankcase out with whatever you can get to get as much water as possible out of it, and get just enough fresh oil and a filter onto it to run a compression test without seizing it up. This will at least give you a starting point to go from during the diagnosis.
It ran strong for 45 seconds and was a fresh engine before cam issue. To be honest, the water issue is secondary to the high pressure blowing out the oil filter. And actually, I did pull the oil pump and put a new/used one on since I found some bits of cam in the pump. Could a relieve valve spring on the pump cause this sort of problem? Thanks