Sadness Child
Crowing
is the door halfway of the width, if so I suggest putting a roost 1 ft away from the wall to the left of the door as shown in the diagram, and on the right side next the the nest boxes I would put that roost about 4-5 ft high and about a 1-1/2 feet away from the wall as shown in the diagram, and as I said before it should run the length of the coop and these roosts given the right support should hold a lot of chickens and you can probably put a lot of chickens in there given that they have enough square feet in run and coop space