What are other relevant questions I should ask owner?

How well did the previous owner screen tenants?

The one thing I can say, is interview and research companies and their owners (operators).

Lacking multi family experience but considering the owner is motivated to sell and from the information provided this appeared to a very solid lead.  

And lets say 6 months later, the owner redeems the property.  

One strategy you may want to think about is buying a home during the owner occ period. 

Sure, take 10,000 homes bought by investors, and do regression analysis that gives me an indication of variables that are common, like geographic area, home value, home owner's age, income level, political persuasion, gender, ethnicity, or anything else!

Expenses approx $30,000Asking price is $900k, however I learned the owner owes only $120k.

Also if you story is that you're trying to be an investor that story if considered is beatable by a home owner looking to secure for their family.

Is it truly "passive income" if you find the right PM or is there always work to be done by the owner?