Based purely on the best place to grow tropical fruit, your options depend upon what specifically you want to grow. For sub-tropical climate with high rainfall, your best bet in is Homestead, FL. For tropical climate with lower rainfall, the Keys. For the highest temps possible to keep ultratropical fruit alive, Key West. For an easy tropical climate with plenty of rainfall and no freezes, plus soil you can actually grow healthy tropical fruit in, move instead to Hawaii, the Virgin Islands, or Puerto Rico. Florida has truly terrible, high-PH soil and a lot of noxious pests.
Any area Homestead or North, will be subject to freeze. Any area above SFL is going to freeze so often it is not worth a move specifically to grow tropicals. The Upper Keys have had record lows as low as 35 degrees F, but never freezing. Key West has had a record low of 42 degrees F, so slightly better.
Can you afford these places? Would you be happy with their cultures, people, and way of life? Can you get an acre of land there, and easy enough access to tropical plants to plant as many as you seem to be thinking? The answer for most people, in most of these locations, is no.
I see no reason to get into a discussion of housing and neighborhoods, and local city qualities, here on a fruit forum. There are other forums around the internet that discuss those aspects of living in various locations in SFL. The considerations are extensive, including hurricanes wiping out your house, as well as your fruit, in addition to crime, wildly different culture from the rest of the US, and exorbitant costs. But from a fruit growing answer alone, there is no place in Florida that is as good for growing tropicals as you can find in Hawaii, Puerto Rico, or the US Virgin Islands, as well as perhaps Guam (but I am assuming their soil sucks compared to the others). Climate-wise, the best location in Florida is going to be Key West, but you will never get that large a piece of property there.
Homestead/Florida City is known as the tropical fruit farming capital of the mainland US, so if you think you would be happy living there, it is the most likely to fit your plans.
Can you grow tropical fruit in locations further North? Yes. But if you're moving specifically to grow fruit, and want the best location, it doesn't make sense to point you to other places. For that matter, you might as well live in any state with a hot or moderate climate, because you're going to need to supplement at times of the year with heat, and/or with water, anyway.
The majority of Florida does not have a tropical climate, so moving there with the aim of growing tropical fruit doesn't really make much sense. I live in the Upper Keys, and I am very happy here. But even here, successfully growing tropical fruit is a lot of work. If it's not the soil, it's the diseases. If it's not the diseases, it's the insects. If it's not the insects, it's the mammals. If it's none of these things, it's the drought, or the flooding, or the severe wind.
Move for reasons other than tropical fruit. Or if you truly want to center your life around the fruit, don't move to FL, move to a truly tropical location with great soil.