K wow you do have a flock lol. I'm hoping to avoid chicken math. I think if it gets really hot I'll put a fan in the coop and maybe try the wading pool method. I really wanted mixed so I could tell them apart I'm still working on coop plans and how I'm going to put everything together.
Good luck with that avoiding chicken math thing. We started out with 5 hens for eggs just for us and now have 64 chickens, ducks and geese. In the worst part of summer here in West Central Texas we freeze gallon milk bottles of water and sit them in the coop. Also a fan that is actually hanging outside the coop and blows in through ventilation openings. It drops the temps by about 20 degrees inside and the girls love it. The ducks get fresh water in their pools in the shade and the geese, which free range on 3 acres during the day will usally find the shade of an old oak tree to lounge in. So far we have not lost a single one to the heat.