I think the used crew setup is 5 of each normal crew, 3 merchants, 3 JoD and 4 Oxhead. As for captains, one of each skill, all of them having +4% in that skill as traits. Then two extra seafaring with one having +4% morale and one with +4% combat. The captains will be a pain but the normal crews shouldn't be a problem. That's what I'm aiming for atleast.