That is probably where I would be headed. Near a national forest, Mobile about 2 hours away, as well as Dothan and Pensacola. Soil is gulf coastal plain, sandy loamy soil, so well water would be good, and not rock to excavate to build. Wife likes the warm weather, can't stand cold. Air conditioning would be a problem, but not heat. Semi-underground would have to face open end north to stay in shade all day and help with cooling. My plans are to build small for living area, then buy some cargo containers for 1) reloading room 2) shop 3) storage for non-perishable goods and dry goods, maybe canned goods, and one container for shallow burrial as a root celler. They are already completely dried in and waterproof, except maybe the one to be burried will need heavy coat of tar. Hurricanes could be a problem, but north facing home would be protected from the wind. Containers should hold up due to weight, size, and they could be tied down.
However, I do like mountains and mountain valleys.