hi guys! i am debating whether to have 4 or 5 standard hens. my coop is 3' x 4' (not including the 2 nesting boxes, which jut out at the side of the coop). my run is 4' x 8'. THEN they have a portable dog kennel run which is 7' x 12' that they will spend more than half their day in. any ideas? 4 or 5 hens? which would be better?