I’m currently a truck driver and would likely be selling myTruck to raise money for investing if need be.

I would want to dive deeper into those metrics to identify its drivers and determine if your wellness retreat vision would be a good fit.

Here's what we do for your reference:Employer & Income Verification via paystubs (or tax returns) and phone call.Landlord verification via callCredit and background checkPictures of all petsCopy of drivers licenseNo evictions or broken leaseThat usually weens out the bad apples. 

Before taking on the RESPONSIBILITY of accepting responsibility for peoples wealth, retirement, and life savings, make sure you have the KNOWLEDGE, EXPERIENCE and ABILITY to provide a proper deal analysis, competent acquisition negotiation, professional asset management, professional property management, and ability to exit at maximum value.  

I highly recommend pre-screening like Kiara said, ensuring that you know who you are meeting with (I know other agents & female investors locally will ensure they get scans/copies of their drivers license prior to meeting so you can inform someone else that way you remain safe).It is also good practice to just batch showings together in an open house, that way you are not running over there all the time just when the next person wants to see the place.

You're getting great advice from the professional PMs here.

There are also a lot of other encouraging drivers and tenant pool factors as well.

Not sure what the demand drivers are. 

I share them openly with the team so they can see how their work impacts the numbers, and more importantly, how their contributions help drive real results.

Note those people have no financial incentive for this recommendation (assuming they are not an RE professional in your home market).Good luck