I am planing a small heay bodies flock of 5 to 6 hens. I was all set on having the nest boxes and the roosts starting at 24 in. off the coop floor that seems to be prevailingwsdom. Then I read in another post here that since they often jump off the nest/roost instead of using provided ramps it can cause leg problems in heavy bodied breeds. I'm thinking orpingtons and maybe ameracuanas so it is important to me to get this right and have happy healthy girls with no problems I've cauused. Also, I'm in Georgia, near Atlanta and need advice on just how heavy duty for cold I need to build the house so the girls will be nice and toasty this winter. (Because of the way our property is the house will be north facing, but with PM sun on the west side.) Thanks for your help!