Nice structure!
It's big, and walk-in, and adding a run will be terrific.
So, however, some other comments coming up. More larger window openings, with hardware cloth, well secured, with fence staples, and then wood strips screwed in over the top.
Secure latches, as in locks of some sort. Raccoons will open those easily.
Roosts need to be at least 12" to 18" away from the walls.
You may have issues with condensation on the underside of that metal roof; there's a thread about that here recently.
Have you predator proofed the underside of the coop? You will have critters living under it, a very bad thing.
A few modifications, and a super nice coop!
Mary