They also have a 'turn key' annuity asset that they can count on for consistent retirement income.

When you are just starting out, all you need is good insurance and stable and steady enough income to not worry about defaulting.

So, people retiring to Florida would essentially be out.

I prioritize applicants with a high income-to-rent ratio, a good to excellent credit history, and a stable employment record.

I had the same situation last year with a property bought through Rent to Retirement in Detroit. 

McKinney, with its stable rental market, is popular for long-term rentals.

My husband and I both work stable W-2 jobs (he’s in trucking), and our goal is to eventually transition to real estate full-time.

Holding EXEMPT (from bankruptcy forfeiture) assets, holding assets in exempt entities (retirement accounts, pensions, IRAs, in some states insurance and annuities), homestead exemption, remote entity protection (LLC, Serial LLC, Corporations, Limited Partnerships,) Asset Protection Trusts, using separation of assets for married individuals (in certain states) charitable remainder trust, etc. can be very effective though can be costly. 

You are also selling your own investment ("should support stable tenant demand"), but what is that based on? 

This Spring the inspection scheduler "Beverly" retired and the whole program moved to a 3rd party contractor out of California who now handles scheduling (with the expected miscommunication and inability to make quick decisions resulting).I have been a supporter of LMHA and the Section 8 housing choice voucher program here in Toledo, Lucas County, Maumee, Perrysburg, and surrounding areas but the program really is now costing far more than we get out of it.