Fresh mill. Bad happenings? What to check for?

Finally got my 5.9 in and fired up. 60lbs oil pressure, Runs good, sounds good but she got hot during shake down run. I had a coolant leak from one of the cam cover bolts (figures the one behind the water pump inlet) so figured I pissed out too much water during the test drive. I pull the pump and sealed the bolt, fire it up again and watch for the new (bad?) tstat to open but doesn't seem to. Upper hose is cool but starts puking water out of filler (cap off). All the time monitoring water temp with factory guage. Climbs high but I shut her down. Try a few more times with same results. Also try with cap on and some pisses out of the overflow and the rad hoses pressurize. I go around back and there is a lot of condensation dripping out of both exhaust but mostly on driver's side. There is no water in the oil and no oil in the water. Car runs and idles fine. Thinking head gasket possibly. The engine is .030 over and factory replacement pistons. EQ heads, .028 head gasket, knock off air gap intake.
Killing me because I took my time and paid attention to detail during assembly.
I can still run the car to troubleshoot. What is the best way to go about this before I tear into it or swap my old engine back in?

Thanks.