We're building a 4x8 modified Purina coop in the grow out pen and I'm wondering if anyone has any suggestions for roosting pole placement. There are two doors. One is on the left side of the front of the coop, next to 4 nesting boxes located on the right. The right side has another large door. The left side of the coop has a large slider window with a chicken door centered below. It's about 18" off the ground. There will be a few ventilation vents on the back wall as well. The Purina plans suggest staggered height roosting poles in a ladder set up. I'd like to be able to put a screen divider down the center to be able to use it for two different age groups when necessary but otherwise it will remain in use for a single group. Has anyone done this? If so, what did you do for the roosts? It's almost to the point of finishing up the roof and then the sheathing will go on so I'm hoping to get this figured out today. I'd be very appreciative of any suggestions. I'd like to avoid redoing it if at all possible. Thanks in advance!