It rocks for sure! Like the sign. Looks like you have maybe 7 birds? Is the outside area big enough? What is on the ground of the run? Do not worry about heat. I have seen pics of chicken coops in Canada that had healthy chickens that were open to the south, sheds really. Heat and poor ventilation will get to them most of the time a lot more than cold temps. I have an old box fan for putting in one of the 4 windows of my coop. It has 2 gable vents and one center roof turbine vent and is 8x16x 9 ft tall in the center. There is also a circuit and box ready for a ceiling fan to op in reverse for summertime, but did not get that in this year. No insulation and no heat. I am in Tennessee.