My main coop says that it’s for 6-8 birds, and currently only has 4. Looking at it, I’d hate to think of 8 in there, but I suppose it would only be at night anyway. They’re loose in their run all day long.That's a good looking unit.
Two coops in the same run should be fine, but naturally they aren't going to stay in their designated spots. It wouldn't surprise me if they all picked one to crowd into.