Thanks for the welcome, the coop measures 8 feet by 8 feet by 8 feet tall. It is 2x4 construction with siding on the outside, plywood on the inside and R13 fiberglass insulation in the walls and roof. It has a 6 foot by 1 foot window on both sides screened with expanded metal and an adjustable cover. The run is also 8 x 8 x 8 and is expanded metal and deer fencing, we were worried about the resident bobcat and/or coyotes getting in, the expanded metal is wrapped under the whole thing to prevent anything from digging in from the outside. We own a machine shop, so my husband sort of over engineered it, we really wanted our ladies to be comfortable and safe.
It took him about 5 weekends and $2700.00 to get it done. As for the heat, yesterday hit 113 and today may go as high as 118, but so far so good. The little a/c is keeping the inside coop at 80 degrees and the chickens have only come out in the early morning to demand their treats, then spend the rest of the day inside. I grew up in Florida and after 31 years still can't take the heat. Once it hits 110 I hibernate until the temps are reasonable again. Your coop sounds wonderful, good luck and can't wait to see it.