How many birds do you plan on having?
4x8 is kinda small width wise, maybe go 8x8?
Here's my coop:
https://www.backyardchickens.com/articles/aarts-coop-page.65912/
.....and dozens more:
https://www.backyardchickens.com/articles/categories/chicken-coops.12/
Oh, and... Welcome to BYC! @The cheek...