Coop size, foot print in feet for the actual floor plan of the hen house for 7 Chickens, simple enough right? oh 4 sq ft per bird, well that would be a small barn, I look for coops on sale and they look like they are no bigger than 4x4 cubed (think walls around a standard pallet) I have a 10x10 run, and old dog pen, but I need to build a comfortable house, simple just give me a size thats right, and no bigger than a standard 4x8 sheet of plywood, Please in layterm english Thank You