If you can afford bigger, go with bigger. I've housed a couple of dozen birds through the year in 8'x8' coop. In the summer they range, in the winter they have the run. It is tighter than recommended but I've never had problems with pecking, health, or production.
I really think the height of the coop may be an unknown variable. My birds have 6 feet of vertical space with multilevel roosting and room to stretch the wings. I don't know that it is a factor, but looking at some of the small coops, I could see that the square footage may be more key. I'd like to hear others' views on the vertical space thing...
I really think the height of the coop may be an unknown variable. My birds have 6 feet of vertical space with multilevel roosting and room to stretch the wings. I don't know that it is a factor, but looking at some of the small coops, I could see that the square footage may be more key. I'd like to hear others' views on the vertical space thing...