My coop has a flat hinged roof, the henhouse is 4 X 3 X 3? feet and then there is a small run directly beneath that that is 4 X 3 X 2. There is also a 4 X 4 X 3? foot run attached. By these dimensions, do you think it will be big enough for 5 medium sized chickens? There will be two nesting boxes and some perches as well. What do you think? I plan for them to free range for part of the day as well so they will not be permanently confined. Thanks for your help!