Well, I don't...a few would be 3 ;)
....but it might work out just fine and is a decent place to start.
Your weather is mild there, that will help.
Go for the polycarb panel instead of that window in the roof,
you don't want to re-do that down the road.
Looks like a decent design.....it's tiny tho...wouldn't put more than a few birds in there.
Make sure that window in the roof doesn't leak(can be tough),
polycarb roof panels might be a better choice for extra light in coop.