PS, consider adding a monitor or functional cupolas to the roof.
Here's a monitor refit on a shed conversion:
https://www.backyardchickens.com/articles/the-scoop-on-a-rubbermaid-big-max-coop.76444/
Here's a monitor refit on a shed conversion:
https://www.backyardchickens.com/articles/the-scoop-on-a-rubbermaid-big-max-coop.76444/