I am not looking to make profits on this, but I’m not going to complain about making any extra money while I’m not there.

And he knows who's working regularly, who's only off-and-on, who's going through troubles, who needs extra work.

Unless you're passionate about real estate and have lots of extra time to learn and become an expert at it in addition to your day job as a doctor, I'd honestly just stick with something more "set and forget" like mutual funds. 

Just factor in for extra time and extra money 

If you are doing 4 people, remember to add extra storage in the kitchen and to have at least 2 if not 3 prep areas (eg island and two places on the main counter) and a larger fridge.

On listing side, again was fully compliant but now just adding 1 more disclosure and agreement to it all drawing it all out in "crayola" as seller defines THERE choice, that it is there choice, and most importantly the extra clarity on dual agency because THAT is biggest impact I see coming, a whole lot MORE dual agency. 

That said, if she's claiming she still owns the place, there might be an extra layer of complication if she can prove her claims and/or hires an attorney herself. 

It may sound nice to pay a 6% management fee but the extra fees can add up to be more than the other company that charges 10% with no additional fees.

Albeit it would take me four extra years to pay off the house.

You could invest in syndications if you are accredited or you could just park extra cash in index funds until you have the time to at least side hustle real estate correctly.