We have a old two car garage that we are not using. So im turning it into a coop and run. The building is block walls and a cement floor. It is about 25 x 25 ft. The run will be 25 ft wide and 75ft long. I am gonna dived the run in half to rotate. This is going to be for my silkies. My question is how many birds could i have in here? I am going to be breeding and i am planing on raising everybody here. The chicks and breeders will be in rabbit hutches. would this be big enough for several generations? The colors will run together but i will be planing breeding's and they will be in the hutches. I can make the run bigger if need be. The building has two east facing windows and two sliding doors. I would like to put a doggie door or something in so in the winter the big doors wouldn't have to be open all day. Can you train them to use one? Thanks!