We are trying to make plans for building our coop. We are only going to have four girls going in for now and the most we plan is 8. I am trying to figure out what are some must do's and dont's for coops. I know they need nests, roost, and 3 sq ft per chicken. What else is essential? We are in Arizona so what things do I need to do for the heat factor. We were thinking a 4 ft by 6 ft that is 1 1/2 feet of the ground and a total of 6 ft tall. my husband plans on just doing wire flooring but it looks like everyone goes for wood with chips over. Which is better or correct? Please let me know all you have learned in your experiences with coop building.