It would take you a life time of cash flow in Ohio to get that return.I would strongly advise you against paying cash for a $100k property.

HELOC can be good for this situation - then you can pay it down and use it again for other life events etc. 

,As a I shared with Jorge, I would like to move to Miami for better quality of life and opportunities in other arenas.

Columbus presents a little different type of investing from Cleveland but you can still find good properties that will give you some cashflow each month (not life changing but with your goal of 100 doors then it'll add up eventually).

You start by mentioning your age... you'd need everything to go just right for the rest of your life to make, best case, $400 or less additional each month net cash flow. 

Whereas, you could be on the AG's hook for screwing John Doe the homeowner out of his sole possession in his life. 

I know it seems like this older lady has an intent to intimidate me, but hopefully she is just behaving this way because her mind is slipping later in life.

While you may not have learned much about real estate you have learned a lesson about life and business.

Many opt for other investing methods in their SDIRA like private lending, crypto, private equity...anything except collectibles and life insurance.Note that a Solo 401k is exempt from UBIT on leveraged real estate so if you have self employment activity and no full time employees save for you and your spouse you should consider the Solo K as an option. 

I have renovated 12 houses in my life and just finished renovating a 1939 bungalow in the Oakland Hills and building an ADU on the same property out of the garage.Anyone who answers the presented question with solely a "yes" or a "no" without first referencing their local city's or jurisdiction's building code would be guessing.