I have several silkies who are getting heat exhaustion when it gets above 70* here in Texas. There coop seems to be approximately 10* hotter than outside temps. There is shade, water, ventilation, dehumidifier, and airflow throughout the coop but they are panting. They are not always going to be in their coop but considering it gets 105* here in the summers, I need to be planning for something asap. There is access to electricity out there so I would be okay with using a unit if i knew what to get. I dont want to spend over $100. Does anyone use or recommend a portable AC unit/cooling system, etc. that they have been successful with? Coop is 8x4x6h. Thanks!