Brandon Turner outlined this method in one of the older podcasts and there are previous posts in the forums.  

Consider using an FHA loan to secure a 1–4 unit property with just 3.5% down and take advantage of tax benefits by living there for at least two years.

I know that the general guidance is that emergency funds aren't to be invested, but given our financial security and the fact that we already have a personal e-fund in a safe, non-volatile location, would it still be crazy/unwise to invest this 15k in an S&P500 index fund in a brokerage? 

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). 

It takes a lot of energy to thoroughly vet a deal and a borrower to make sure financing is secure.

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

Exterior security cameras.

Secure the debt by real estate, now we're talking a great partnership deal.

Its market-ready condition and strong local demand made it ideal for a fast, profitable transaction, aligning perfectly with Partner Driven’s strategy of securing high-yield properties in promising locations.

Nothing you mention is "ordinary" and you should charge for all of it. dodged a bullet there thats a very good price take it from the security deposit and call yourself lucky.