We have an added layer of stress compared to something turnkey in the traditional sense. 

See the stress test above.  

We not only lost our hard-earned money but on top of everything, our health suffered, I had several sleepless nights due to the stress and anxiety that this horrible experience created for my wife and me.After the buy-back was completed, I approached Maverick to at least help us with our losses by requesting us to give back ~$6000.

This is causing a lot of stress and disappointment for people who trust you with their life savings.

If there's a hole, it may be a red flag.b) sensitivity analysis: I examine all the assumptions, and make sure I can live with the worst case scenarios.c) "Stall and see": if they are getting money over multiple years, and there is no penalty for investing later, I would usually wait so I get some real performance data, versus having to look at theoretical pro forma information.d) Recession stress test: I will not invest in anything, until I subject it to recession level stress and see if I can live with the result.

Even if it takes longer to pay off, having a steady, reliable tenant might actually be less stressful than managing an STR.FYI - consider starting with a regular rental but structuring it as a 6-12 month lease.

The stress involved in dropping a big deposit is such a PITA.

You certainly can have more robust systems, and probably should as you scale, but if you're looking for easy mode don't stress about it.

Sadly, the biggest thing is stressing that it's not section 8 housing as that seems to be the boogeyman for any homeowner.

Lesson learned: stick to cosmetic fixes unless you’re ready for the stress of a full reno.If house hacking isn’t working in your area, maybe look into single-family homes with ADUs or just an extra bedroom with an exterior entrance.