One enclosure for your breeding group, then one grow out tub for sub adults, and two enclosures for your larger adults (that you are going freeze).

I find that as long as they aren't breeding, and if you are always adding new inhabitants then you do not see the aggression to each other that you would see with established colonies.

If there are new ones coming in all the time the colonies are exactly established.

I lived in a loft with other 100 rodents and 40 snakes... it is doable in a smaller space.

Bruce