I bought an 8'H x 6'L x 4'W A-frame chicken tractor. Is advertised to hold 8-10 chickens. I will start out with 3-4. So when the time comes that I want to get 3-4 more chicks and add them to the flock, will this coop be large enough to house both, since I always read about the older ones bullying the younger ones.....and especially if I free-range all of them during most of the day? With the $ I have and will invest in the coop, chickens, etc. I sure don't want to have to get still another coop each time I add more chicks. A neighbor down the road has 4 chicken coops and the yard looks so trashed out.