In SP, tech gets researched at the beginning of the turn, and then stuff gets built. If both the Oracle has (1) and your tech bar has (1), then you would hit enter, get the tech, then cash in the Oracle's tech. So you can finish monarchy the same turn you build the oracle, and get Feudalism, if this was a SP game.
I would suspect that Pitboss is going to work the same way. Automated workers and some other movement things go in a different order for Pitboss, but I'd be shocked if you don't research tech first and then build units.
I would suspect that Pitboss is going to work the same way. Automated workers and some other movement things go in a different order for Pitboss, but I'd be shocked if you don't research tech first and then build units.