I have all the same questions.
Plus we just added six Guinea pullets to coop.
All except broody and Guineas leave coop in morning and free range until dusk, only wandering into coop for water during heat of day...sometimes they just hang out on back porch around dog's water bowl.
Guineas are just 12 weeks and only day three with us so I hate to let them out just yet. Was planning on letting them out in a day or two, but wondering if I should go ahead and let them out... Afraid they'll go after hatchlings...