There's a reason that people try to buy properties off-market and that is because you can find sellers who care more about terms than maximizing returns.So start with a conversation: you already presumably have some rapport since it's your landlord and you've spoken before.

I like his points about building a “team” and not actually asking people to be “on my team”.

I believe if people make money and there is sufficient housing supply, housing will become affordable. 

Using different rental criteria for people with children than without, COULD be seen as a violation of that law.

Red flags for me include people who are overly optimistic without considering risks or those who don’t seem to have a clear plan for their contributions to the partnership.

Most people don't qualify for that relationship.The seller financing will not show up or affect the credit score.However, when applying for a loan at the bank or especially a Federally Guaranteed loan, they ask on the application for ALL Loans, whether  or not it shows on a credit report.

no reports of incidents with our residents but there were some people injured and some homes damaged. 

We net 10s of thousands of people from the Midwest states as well. 

People also love the back deck with the string lights and a nice seating area. 

Returns are great if you get a good area and build a solid team but thats going to take some leg work in picking the right people that see's your vision.