Hey guys! I know it's not winter yet, but need some help preparing my coop. I'm in spokane, so winters get pretty dang cold here, and summers are pretty hot. During the winter, it often gets 20F or lower. I read that you should not use the 250watt infared heat bulbs for chicks because they get too hot, but to use a 75 watt. Is this correct? Also, I was wondering if i should close the ramp going in and out of the coop and just let my girls out every once in a while? do i need to seal up the gaps? Thanks so much!!!