I used to own a large SFR management company I sold to Evernest in 2019 and I manage a Kroger SC and a set of retail condo suites for a client now but it isn't my thing. 

Our current tech stack is a mix of Buildium (very clunky), Breezeway (great, but limited without a PMS), Xero and Google Suite tools with lots of spreadsheets involved.

I think initially it makes sense to find properties that already have finished basements, in-law suites, etc. as converting those spaces to ADUs will be inexpensive and create a significant amount of rental income ($2,000/month+ in most areas close to the city).

Or buy a 5bed/3bath house, live in the primary suite and rent the other spaces out.

You have access to the Starter plan with your Pro membership, but you also get 15% off the Individual plan as a Pro member if that subscription suites your needs better.

I think this arrangement can suit both parties, he wasnt going to be able to keep the house but can still live there for super cheap.

Check out Military to Millionaire on Instagram.

If they file a suit all you have to say is the concessions was for any and all issues which most likely it was.

Your other questions are better suited for an attorney to avoid misinformation.

I understand there are some protections that go along with it with all the law suits going around but hardly doubt they would go after an office with two agents in it.