You might be able to go with just 2 males, that way no babies in the future. Of all the fish I have had, mollies are the ones that usually come with diseases. Never fails, they come and look healthy. Within days the pre-existing tankmate mollies get sick ( ich, etc.,)and then die. The new mollies also end up getting sick and dieing. Don't know why. I don't want to introdue any to my big tank for that reason.
hmm. maybe it's time to get a quarantine tank?