Well, I designed my coop for an easy 44 laying chickens, so since this was my very first batch of chickens I already have plans to get more in the spring, ya know how chicken math works right? lol I know their is more than enough roosting space, we tried to plan for more than we thought we would ever have to avoid chicken math problems. Their is only one or two birds that have trouble getting up as high as the rest, mostly because they wait to get into the coop until the last minute when their is no light left to climb up, I will soon be lighting the coop to give enough laying winter light, plus I got a solar rope light I was thinking of putting in for some ambient light. Also I know they shouldn't need the heat lamps, especially all four but as per everything else with my coop things got a little over-engineered for worst case scenarios. Once in a blue moon we get a wicked cold winter. That was a good point though on the metal roosting bars, since they are sitting on the metal hinge bar I have I will try to figure out a way to keep them off of it for the winter. Maybe I will offer a couple different roosting bar choices and let them pic what they like. I do like your sand idea underneath to keep cleanup easy.