Make your shed (coop) have a small outlet door that allows them to go out into the pen (chicken wire/mesh) and the floor will be nice with just plywood and hay. The roost can be a stick or tree branch for them to climb/jump up on....like the things parrots stand on, the round stick deal. Get the eggs before they get pecked up. You got me thinking a ways back when my family used to raise chickens. One rooster used to get out and chase me around....I got really fast and in good shape from those darn things.