Approaching the finish line of my coop and run build. Thank goodness because these girls are outgrowing their brooder QUICK. I installed a poop board that I'll be putting sweet pdz in and cleaning kitty litter style every day or two. But as for the floor of the coop-- should I use sans or pine shavings? I live in the Deep South and worry that sand will get too hot in the summer. Let me know what you experts think! Also, when the run is picked free of grass, should I lay any kind of bedding? Or is dirt fine?