Thank you all for your comments. For the roosts, the pictures don't show it, but most are staggered and there are more of them you can't see well in the pics. They are various heights and the lowest ones are slightly higher than the nest box grips. They are at min 18" from the ceiling and min 15" apart.
The coop gets pine shavings about 4-6" inches thick. It also has duncan's wall feeders and one for grit and oyster shell. I keep one stainless steam table pan in the coop as well, as I like them to have water (and food) at all times, in case the auto door fails, I sleep late (not likely), or in the event for some reason it doesn't get opened in time.
There is approx. 18 linear feet of ventilation (front and back sides) you can't see. I also left the roof boards exposed to provide extra ventilation. I would say that adds another 5-6 linear feet. Then the gable vents as well. During the day, almost all the doors and windows are open except the nest box doors. Most days, I can monitor for alarm calls and assist if a predator is there.
At night, until I get the screen and bars on, it's just the existing ventilation. I would say the existing is not enough when the daytime temp reaches 80 and above. Fortunately, that's not too often, however it was in the 90's and humid when I first put them outside. I'm sure they didn't appreciate being in a coop in that weather.
I did buy a barn fan for the 80 and above days, and it should be arriving soon. I have the hardware cloth ready to go as well, just need the window bars. There are also automated products that look good and can start the fan when the temp/humidity reaches certain levels. I may try those in the future as well.
Thanks again everyone! : )
