We are in the process of building our coop, and I wanted to run some dimensions by the group to see if it sounds reasonable. We have 4 one week old pullets (rhode island red, barred rock, buff orpington, mutt americana), and a relatively small backyard in a city setting. 4.5'x3' base for the coop, with a 3' wall on the side connecting to the run, and 2.5' tall on the far end. The roof will be hinged and flip opened, and we will have a box outside the coop for a nest box. The coop is raised 12" off the ground so the chickens can get underneath it from the run (this can be raised further as well), and the run is going to be 4.5'x5' (not including the space under the coop). Does this sound reasonable?