Southwest Florida is definitely an exciting (but competitive) market, so props to you for diving in!

Both strategies have potential here, so it depends on your goals:Strategy 1 (Duplex) can be a solid choice for building equity and generating cash flow, especially in Austin’s competitive short-term rental market.

If you've got people fighting over your listing and competition trying to get into the unit, then you're too low.  

Encore, you would need a membership, if you purchase in the new phase (Spectrum ) they automatically come with the amenities (membership) included to your guests, but the HOA and management have other restrictions and all units come furnished with the same packages, so you can't make changes to have it stand out, which is what is really needed hear in Orlando since there is so much competition. 

All 3 parts are critical to being successful here and we’ve been doing it with todays prices, todays competition and todays interest rates.  

The only instance where it might be more beneficial to do it this way vs. getting financing right off the bat is if you need to be SUPER competitive with your offers in your market.

Do you know what a competitive cost would be and how I can go about finding a good and fair GC for ADU build? 

Check your competition and make sure your are under them if reasonable to do so.

Land priced right, zoned correctly, market analysis great and potential competition low.  

Miami seems very interesting, but maybe too competitive... what do you think?