Hi guys. I'm building a coop currently and it's 4'W x 4'L and 5' H. I currently have 3 chickens but plan on expanding in the spring. They have a run as well which is 4'W x 6'L and 4' H. I guess my question is, could I safely add 2 more chickens in the spring without expanding the living area?? If I decided to get more than 2 chickens how hard would it be to make an "addition" to the coop. I'd love to see some coop photos!