I really like your coop. The run under it is great but I would add more run space so the chickens could be outside not just under the coop with very little light. They will utilize the run under the coop when its raining or hot but adding more run space & maybe another roost outside would really be benefical to your flock. I know it means more work & money. Maybe I should just keep my mouth shut. Again you did a fantastic job.
We have plans for a run behind an adjoining building (see videos on one of my member pages) but we need to re-side that building before installing the run. We also plan to let them free range after they learn to lay eggs in the nesting boxes. We don't want them to learn to like the barn rafters like our other flock did.