I'll assume the worst case scenario in that you have a more expensive refrigerator and want to either repair it or replace with a similar brand/model. I

If they survive that hurdle the voucher is based on income so the tenant responsibility portion can change.

When you look at Florida as a whole for STR, you want to focus on the areas that have always survived and thrived on excess tourism.

But the Tiny house model is really appealing to me for the low entry cost, opportunity to cash out on selling units while creating cash flow with very low maintenance.

But due to 10 Tech giants , our economy is surviving and seems "healthy". 

I'm still gathering tips from my business partner who is beast mode on RE photography for STRs.

The money you make on renting-by-the-room could go towards paying down the principal....OR.....you could put that money into hyper-growth mode by investing it into say, an ETF.....regardless of which path you choose, you will soon have paid-down the principal and have that 20% equity that is needed to eliminate the PMI. 

The question you might ask is "What survived the foreclosure sale".

That's another problem, I'm surviving on a small fixed income, therefore I can't afford to do any true marketing.

How long can you survive if for what ever reason you can only collect 1/2 your rents?