hi there i'm very new to chickens, and i have some questions about coops. i plan on getting two orpingtons, probably buff. the space i have for the coop is about 6 X 20, with a small tree in the center, so it's really more like two spaces that are 6 X 10. what would be the best coop for my space and number/size of my birds? the more diminutive the coop, the better, as i'm trying to keep a nervous landlord happy. i've been considering an ark that has a coop on one side and a run on the other, or a two-story ark. is it better to have a larger run area, or a larger coop area? i'm concerned about getting a two-story ark, because it seems like the vertical space would be too cramped for large chickens like orpingtons. any advice?