I have and 8ft by 10 ft coop with a 16ft by 16ft run And 2 7 foot roosts in the air that is 16 inches away from the wall held up by three boards comming from the wall pluse 2 5 foot roosts that are closer to the ground. how many chickens can i fit in that area. some say 3 square feet per bird some say 4square feet per bird also some say 2 square feet per bird. i have 17 already in the coop i have 12 more i need to home and i am about 4 weeks away from getting another coop. because the next 4 weeks are going to be very busy