I'd get a window unit and keep it on insulation or not. At least cold air would be circulated instead of hot air from a fan. When DH and I married I told him he had to promise AC and hot water and I could live anywhere he wanted. He has kept that promise all these years. LOL I keep the house at 70 in the summer and 76 in winter. We live in West Central AR and it's not unusual to go over 100 degrees in the summer. Walk in most homes here and you need a sweater. A business or medical office you need an electric blanket. LOL