As Monty Python would say.....Now for something totally different.
When I saw your photo, I thought immeadiately that you would get more useable space if you turn it on it's back - (the side opposite the doors). You could then raise it up a couple of feet on some 4x4 legs, even add wheels on the bottom of the legs if you want it moveable. Raising it up would make it easier to clean. You could remove the doors and build a roof out of a sheet of plywood and 2x4s. Then take the removed doors, and cut them down to use on the short ends for clean out, add a chicken door and windows - and you have a much bigger coop!
When I saw your photo, I thought immeadiately that you would get more useable space if you turn it on it's back - (the side opposite the doors). You could then raise it up a couple of feet on some 4x4 legs, even add wheels on the bottom of the legs if you want it moveable. Raising it up would make it easier to clean. You could remove the doors and build a roof out of a sheet of plywood and 2x4s. Then take the removed doors, and cut them down to use on the short ends for clean out, add a chicken door and windows - and you have a much bigger coop!