Sounds like you have it figured out but just to let you know 'drafts' do not hurt chickens. They are perfectly capable of living in a tree in temperatures far below many believe possible. Our coop is exposed to high wind in -15f. We have openings at the bottom, in the ceiling and the top of the highside wall, in addition to the door. It is 'drafty' by design.
Your birds are remarkably resilient and extremely tough.
I am not by any means knocking what your doing, just letting you know you can open your coop up with little if any concern. Looks like you have everything under control and it only took you a page and a half to get your original question answered!! Fwiw we use DE to help dry the bedding. Poo gets a crust and does not really dry in the center. The addition of a desiccant helps dry the poo quickly. The desiccant dries more efficiently.
Your birds are remarkably resilient and extremely tough.
I am not by any means knocking what your doing, just letting you know you can open your coop up with little if any concern. Looks like you have everything under control and it only took you a page and a half to get your original question answered!! Fwiw we use DE to help dry the bedding. Poo gets a crust and does not really dry in the center. The addition of a desiccant helps dry the poo quickly. The desiccant dries more efficiently.