Hey TB,
I wouldn't worry about insulation if you choose cold hardy breeds! My favorite trick to keep the girls warm in the winter is to stack a generous helping of straw/old hay bales alongside at least the windiest sides of the coop (usually N and W, but it changes throughout). As it gets...
I just purchased my very first bebe chickies yesterday evening, three blue orps and one splash. They are all very happy and healthy, except one of the blues has one of its eyes closed most of the time. That one seems especially sleepy, too. Maybe I'm just a little paranoid, but I've never seen...