Hi everyone, newbie here! I've built a coop but I'm not sure how many chicken will be comfortable in the space. I originally was aiming to house 3-4 chickens, but after adding a nest box and roosts and food and water the space looks smaller than I pictured. The coop is 39"L x 23"W. I placed a 12"x15" nest box inside the living area and I have two roosts, one 22" and another 16". Minus the nest box there is approx. 5.5 square feet of living space in the coop. Is that enough for 3 chickens or should I only get 2? I want to get either buff orpingtons or black australorps. No roosters. The run is 8ft x 3ft.