That's tight for 6 birds in your climate.Coop is 40 sq feet inside
I do. Even if they have a nice big weather proof run,I don’t think space is a issue.
flock contention often starts in the coop.
Like this......
And I have watched them perch for the night...and it’s like they don’t want her sharing the roost. She gets up there and they pick at her head.