@faery69 what a beautiful coop! I love that it was designed as a potting shed but you saw the potential for a fantastic hen house! Just goes to show what a little creative thinking can come up with.
While I think it's prudent to consider the effects of the sun during the hot season, it's equally important to consider the sun in the cooler season too. I'm not sure where you live, but if you are in an area with all seasons, maybe placing the coop in a location that takes advantage of shade trees in the summer with bare branches in the winter could offer the best of both worlds?
I think it's a perfectly beautiful coop and to name it for your grandmother just makes me smile