I am going to build a pallet coop. I have the door, even though that's all I have. LOL. It is going to be 12x8. The front is 8' and the back is 6'. I am needing help on some basics. - How high should the pop doors be. I am having bantams and standards, and want both doors to be even height. - How wide should the ramps be. I was thinking of having 4' long ramps. - Is drywall okay for the birds if they peck it, or should I use OSB? - For the inside, should paint be exterior, or is interior paint okay? - Is there a certain way the door should be facing?