Hi, this is my first winter with my flock-6 rhode island reds, and 4 blue splash marans. My coop is home built of decking boards, 8x5x6, I have the ceiling insulated with regular house insulation, and I put up foam insulation on the inside today, b/c temps are to get really really frigid here in PA. Is that ok? Or should I not have done that? I also have a good layer of straw on the floor of the coop, and in the nesting boxes. Thanks!