I stupidly allowed myself to get sucked into buying all his courses... one right after another... each time, thinking that "this next course" was going to be the one that fills in the gaps... only to experience yet another huge letdown... and feeling like a total putz (or like Charlie Brown to Joe McCall's "Lucy") for falling for his BS once again...

if they are a great PM 20% is totally fair. not too high and not too low

The area has certain advantages like shelter from regulation risk (pretty much as low as anywhere in the country if you buy in the approved STR tourist zones) and long term security (people aren't going to stop going to Orlando anytime soon). 

Loan Security: The property will serve as collateral for the seller-financed loan.

Explore my personal favorites, Set For Life by Scott Trench or The Total Money Makeover by Dave Ramsey, for invaluable financial insights.3.

In both cases to keep things clean for underwriting at the bank I used my HELOC to secure the mortgage. 

Maybe if you had a good, secure location to store things you could pre-order stuff you think you might need for your next project(s) and stockpile it.

I’ve spent less than 150k total out of pocket investing in RE in the last 9 years and have been buying “base hits” in Dallas and Arkansas and now have 29 SFR.

I'd deduct this before accounting for your total cash flow. 

Wealth Building: Paying off the first STR focuses on cash flow and financial security, while buying another property focuses on scaling and wealth building.