Our temperatures at night right now are around 40F The chicks have totally outgrown their 2 watermelon boxes and have started to fly out this morning. The coop will be completely finished today. If we set the heat lamp up in there, can we move them out there? The coop is 4ftX8ft well ventilated. but protected from wind and rain and has a roost that now I know they could get on, lol. Thanks!