I believe in the heat pump, especially the newer units. I know you don't have a lot of cold weather there but my daughter lives in Chipley Fl. and they have used theirs a lot this year. Short of a fireplace it is the cheapest way to go. I installed a new one two years ago and my elect bill dropped 30Pct for the past two years. Jackie B.
If you live in a "manufactured home" a heat pump/ac with electric strip heater is usually a packaged unit. Cost in Central Florida runs $4200 installed with new t'stat and concrete pad. Need electric backup for below 32 degrees.
I have neighbors on both sides with heat pumps . They are familiar with their servicemen on a first-name basis . I can tell when a serviceman is coming 'cause their outside units start making all sorts of weird noises .
Strip heaters used to be expensive to operate but that "gap" is closing a bit , still , it gives me the willies to hear a compressor running in the heating season .
Stay away from a TempStar. Kid at work paid $5500 for his and it's on its' 6th defroster board, plus the guy has been charging him $65 for the service calls even though it is still under warranty (3 years old).
There is a store just west of Valdosta Ga named Triple H, I think that sells a 4 ton heat pump package unit for $1600.00. I pass by it on my way to Panama City and made a mental note of it. It was a common name brand unit but don't know what the seer rating was. Jackie B.