Chickens5 weeks old and the brooder is unmanageable chickens flying out walking all over garage lol and the poop I'm on poop control most of the morning. We live in Wisconsin we are thinking of putting them in the coop which we are building maybe even today. How high should i set heat lamps. Coop is 8ft by 4ft with a built on hen house. I have 28 chicks all get along great