I am getting several breeds to add to my flock. I have a nice 12 x 16 building we have not really used. I am going to turn it into my chicken coop. The front has 2 windows and a door in the middle (thats on one of the 16 sides) I am thinking the back 16ft section I could do four 4ft by ? runs out. Inside would do 4 x 4 or 4 x 5 or 4 x 6 rooms haven't decided length inside. but will need enough for a couple nest boxes. I could also do a 4 x ? run on each side and make their door towards the front side to have 6 total runs and still have space for storage, feed, a brooder, whatever. Any tips or advise? any pics will be helpful. Materials? thinking of something like the image below.