If you put your location into your profile people can give you better-targeted advice. Climate matters. :)
Hard work getting this ready, but not so hard as having to build it. :D
Welcome to BYC. Where, in general, are you? Climate matters, especially when it comes to housing.
I agree with this.
As a general rule, dry chickens are healthy chickens and the wet-cleaning of a chicken coop should only be done out of dire necessity.
Because these are your first chickens...