Hello, I'm new to chickens, (we don't have any yet, but my coop is near completion). We live in SW Wisconsin, live in wooded country land, and are planning to get 15-20 chickens. The Coop: I based my coop off of some basic online research, but i'm wondering if you experienced chicken owners, any who live in WI, MN, IA type climates can give me feedback the balance between ventilation vs. insulation. the front and side windows open and are on each side. The roof studs are open 2x4 front and back... See photo... Thoughts?