Thanks for the suggestions and the links. In regard to the humidity, I appreciate your warning. Simply put: Does it go on for more than 2-3 months (like it does in FL, AL, MS, etc.)

2-3 months he could either stay in the house in the a/c or we could get outta town for those months. That's what we've been doing in Arizona for 20+ years. But if the intolerable weather extends much beyond 2-3 months, it gets very cost prohibitive - renting or buying a 2nd home and all that.