I am converting two stalls in our horse barn into the indoor coop and enlosing the attached outdoor paddock for their run. I have 12 chicks on order, 6 Barred Rock and 6 Black Sexlink. My questions are: How many nest boxes do I need? How far off the floor do I attach them to the wall? How many roosts should I have and what size? Again, at what height? Do I need roosts in the run? I've got plenty of time before they are ready to move to the coop, but I want to do it the right way from the get go. Thanks everyone!