It's true that those are best case scenarios but probability is in your favor.

While the terms might not be as good, they're not necessarily terrible.I bring this up because we've seen foreign investors pursue the BRRR model, only to find out they can't get a favorable mortgage when it comes time to refinance.

Looks like you'll have options going with a US broker/lender as noted from other's comments for a fixed 30 year but the terms may not be as favorable, especially as a foreign investor. 

If you could save $50,000 and then assume his loan, the numbers may look favorable.

The numbers would be a lot more in your favor in terms of passive income building.

Therefore, I tend to make much more conservative decisions with saved money than I do with borrowed money.Also,  an inflationary environment is favorable to a debt based economy.   

If you were to pay the past due taxes at the counter, you would essesntially be doing the owner a huge favor.

She supported me through school, and now that I'm stable in my career, I want to return the favor by helping her build a retirement nest egg.Her financial situation isn't ideal, with maybe only about $40K to her name and no significant assets.

Locations for Business Growth: Are there specific Indiana cities with a growing real estate market that would be favorable for establishing a service-based business catering to landlords and tenants?

So do yourself a favor - never hire property management especially if the property is local and you have less than 5 units to manage.