As suggested by Fairline, I'm going to introduce a Nationalist CR-32 in addition to the Italian one. The question is which unit to drop?
With the events, I'm planning on scrapping a large chunk of the Nationalist reinforcements, offensives & counter-attacks & mirror the Republican reinforcement events. This should be relatively easy as I can copy/paste that entire section and then just replace the unit names & coordinates. I will need to tweak things to get the balance right, but this should produce a much fairer flow of units for a two-player PBEM game.

With the events, I'm planning on scrapping a large chunk of the Nationalist reinforcements, offensives & counter-attacks & mirror the Republican reinforcement events. This should be relatively easy as I can copy/paste that entire section and then just replace the unit names & coordinates. I will need to tweak things to get the balance right, but this should produce a much fairer flow of units for a two-player PBEM game.