Hello! I'm getting 10 6mo old ISA browns tomorrow. Yay! I've never had chickens before, I'm a total noob, and need advice. How long should they be confined in the coop before letting them out? Do I put them under lights and if so, how much "sun" do I add? My nesting boxes are ~14" off the ground, do I need to add a roost/rail to the front or can the little ladies navigate that without it? All replies most appreciated!