I'm planning to turn one of my unused 12' x 12' Noble horse shelters into my coop. The shelter front faces south with full sun. No insulation. Just pole framing and 1" plywood. Currently, has stall mats on top of 8-10 of pea gravel. I'm planning on putting down pallets then some sort of cover then thick layer of shavings. Shelter pic: http://www.noblepanels.com/ProdPics_Large/shelter-solid-event-front.jpg My questions are: 1. Should I put more than hardware cloth over the event front bars - like shutters to prevent so much air in? 2. Should I put in a vent in the back top by cutting a hole and cover with hardware cloth to get the air to flow through from open front to back? (There is a small (1/4") gap all around the top were the frame meets the metal roof). Suggestions or comments very appreciated.