Newbie here.. OK, We have the coop built. We live in southwest Missouri. We have 2 week old chicks (44, so far). We thought we could handle more?? Anyway, It is 12 ft (sides) x 16 ft. It has a "shed," type roof (front high, back low) 8 ft front, 6 ft back wall. Metal roof, over OSB. We have 2...