I think the moly lube on your cam renders it fairly safe. If your oil pump is
good and you have plenty of oil in the crankcase your oil pressure will probably
come up in less than 30 seconds, which at cranking speed is not very many revs.

IPD offers (and you can make) a shaft that goes in through the hole where your
oil pump drive fits and you can turn it with an electric drill to pressurize
your system. I have only used such an item to line up the oil pump shaft so
that I could stab the oil pump/distributor drive gearshaft to get the proper
orientation for the distributor. I've always used plenty assembly lube
including in the cylinders, and suspect no extreme initial wear with any of
the engines I have built.
--
George Downs Bartlesville, Heart of the USA!