I have a few questions. I have 3/4" - 12" wide plywood planks that the previous owner of our house left. I have enough to cover 3 sides of a coop with 1 side having a 3' door and the 4th side being left open or cover with hardware cloth if I have a 6' in the front sloping to 4' in the back. 1. Will that height work? 2. Coop size would be 134"x92" - 85.5 sq ft; In addition we will have a 10x20 run. Will this be ok for 15 chickens? 3. When using the planks can I caulk or put some sort of filler between planks to waterproof? Do I need to worry about that? The roof will have plenty of overhang. 4. Should the open side be on the narrow side so it is deeper or should I make the longer side open? I hope this makes sense. I may have enough to make it 8' sloping to 6' but not sure (haven't done the math yet) We hope to start construction next weekend.