I want to thank everyone for their opinion. I'm sure an arrangement can be made, and @Huffnpuff will come up with a solution. I agree being 3 months to the event isn't much time to shift entire teams/armies that have probably been building over the last year.
I think it sounds like everyone should do their best to spread out teams and try not to duplicate factions. This isn't anything new honestly, and always been something captains should be considering as OFCC is about flavor and providing good match-ups.
IMO, i think something like above being mentions should attempt to get no duplicates of factions, but if no solution can be found allowing up to 2 factions duplicated? More than 2, should probably split teams. Just an idea at a solution, but other thoughts?