No I haven't a sketch of that but it's going in the top left corner of the run, which is beyond the tables in this photo.
View attachment 2977088
The posts in the photo will form the corners of the roost.
It won't be a coop like you're used to with your cold winters. Instead, imagine a roost over a raised and easy to clean floor with walls on three sides that reach only as far down as the raised floor to create a breezeway beneath, and a skillion roof.
The patch beneath will therefore be double shaded some of the day and triple shaded most of the day. I'll put food and water under there.
Once that's built, I'll dispense with the old tables and put some plantings where the tables are and it goes without saying, I'll exclude the hens from that patch until the plants are well-grown. I'll be selecting the plats from what I see thriving around the neighbourhood, things like plumbago and wisteria, and from one of dad's ornamentals that he put in the spot. That won't be until spring at the earliest.
Once the plantings are established, the hens will have a good stretch of deep shade, plus the misting. By then, the flock should be around 6-8 hens and I hope to have provided sufficient layers of shade for them to stay cool when the heat is at its worst.