I commend your laying this out on graph paper.Roosts are gonna be set at 4 feet high. This looks crowded, but coop is 8ft wide.
Maybe you plan, but have not drawn, large roof overhangs.
Here's some tips about heights:
https://www.backyardchickens.com/articles/coop-stack-up-how-high-stuff-works-well.73427/