I'm browsing around looking for coop ideas. I have an area in my backyard that once was a garden. It's a long rectangle bordered by railroad ties. What I want to do is put a coop at one end and turn the rest into a run. I can't really free range the chickens in my backyard. The area gets good shade in the afternoon and is protected by some large trees. The area is 5' 10" wide by 22' 6" long. It's dug down fairly deep inside. I would guess about 12" from the top of the railroad ties. If I go with a coop about 6' x 6' (overhanging the ties) that should give me plenty of room for 6 to 8 hens if I'm reading things right? That will give me about 100 square feet of run. Will that be sufficient for the number of hens I'm looking at? I'm looking at having a door at the end of the run and another full size door for access to the coop for cleaning. Nesting boxes will sit out from the coop with a door for easy outside access. I'm considering doing corrugated metal roofing to cover the run but haven't read anything regarding covering runs. Am I on the right track with my plans? Anything I haven't considered that I need to? At the moment I'm planning on doing Rhode Island Red Bantams if that alters anything.