I will be getting 25 Buff Orpington chicks in early June. We will be keeping about 6 for layers and the rest will be for meat. I have an 8 x 14' shed that I would like to turn into a double coop. If I wall off a 4 X 8 section to use for the layers, will the remaining 8' x 10' space be large enough to raise 20 to 25 chicks to maturity? Also, how large of a run is recommended for the layers? I am thinking 8' x 20' for the meat birds but not sure about the layers. Is insulating the coop a good idea? In the winter it can get to -30 Celsius. Thanks.