Upcoming Coop Remodel

[astone]

Any size recommendations for a flock of 20ish chickens. Their "house" is almost 8Ft x 8Ft. They have plenty of roosting place. I'm just debating on the approximate size of a run. I can also let them free range during the nice weather. They will also be getting a sand bath area. Small blue pool with plenty of holes drilled into the bottom. It sounds like it will work anyways.