My plan is to live in the house while in the area and either rent it or sell it once I decide to move.

I can't do anything to my rental to increase efficiencies in creating more income until it is vacant or the market decides I can.Businesses will require workers, that require leading, and that requires more patience and more hard decisions/conversations to make.

In this case, it's essential to weigh the potential tax consequences against the overall financial picture and your investment objectives.If you decide to sell the current rental property and invest in another rental property down the road, you can potentially utilize the losses from the first property against income from the new property.

I know many airbnb owners cashflowing even while house hacking!

A property owner may need a roof on their house they can't afford.

I will pay the property owner a lump sum for all 6 units.

Basically, there are a lot of options and variations but you should be specifically seeking a construction loan and from there its really up to you to decide what is the best option.

If you take the owner financing and it is paid off shortly you will have a large tax burden at that moment. 

Whatever you decide, I wish you the best of luck!! 

Is there any law in Florida that protects the rights of the property owner for rentals relating to animals on property?