Can you imagine taking the time to find a new place, pay the despair, set up utilities, arrange for a moving truck/company, packing and unpacking everything, changing addresses everywhere, etc etc etc.

If I see a note investor offering this to investors, then I can only imagine the risk profile of these assets. 

Social security, I would have to imagine that is about $30,000 per spouse(atleast).You are likely guaranteed $150,000 just between the social security and annual return on the 1.5 million not factoring in the IRA withdrawal.I think that is a healthy balance to retire on.Maybe, you can't be extravegant but a very respectable life.Congrats!

Imagine getting individual estimate from plumber, HVAC, drywall, roofer etc.Did I get a less competent inspector? 

Some common OVERLAYS are:Credit ScoreNot using Rental IncomeSeasoningLoan MinimumsMaking us have more downpayment than neededNot using “After Repair Value”Limiting the number of loansRequiring more reserves than neededAnd plenty of others tooSo imagine you are trying to use the BRRRR method on a property and your lender states “We can’t use the ARV until after 12 months, we can’t refinance until after 12 months, we can’t use rental income until it is on your tax returns, your loan amount can’t be below $100,000, and we will require you to have 30% equity in your property”.If that was the case we couldn’t do the BRRRR method - ever!

Imagine how quick even a 10% structure savings would pay that off.  

Many argue that I couldn't imagine doing it with a family.

It's Illegal, therefore attorneys are not going to risk it.I imagine if you do this in SC you could be the poster boy they make an example out of.

I would imagine that a successful investor like the  OP is not looking to "add someone".

I can't imagine the short-term private rates, and the personal loan rates are much different right now.