We are thinking 5 hens. What do you think of this coop design? I think the only thing I'd add that's not in the diagram is a roost, and I'm wondering if that's enough run space (though we'd probably clip wings and let them run around the yard some. Most of our fence is 6ft but we do have a section that's only 4ft).
http://www.organicgardening.com/pdf/coop_plans.pdf
http://www.organicgardening.com/pdf/coop_plans.pdf