Develop an extensive email list of “interested parties” and periodically contact them with “soft advertising”.4.

I don't use any 3rd party software. 

Generally yes, 30 days from the date of which the agreement ended and was acknowledged to have ended by both parties.

Work a second and third job if needed.  

I dont but doing a quiet title is not a complicated task for any decent RE BIZZ attorney. there is a title company that will insure tax deeds you can google them. its not the greatest and many lenders wont rely on it.. but u can use it to sell to another party if they are not getting a loan..

Quote from @Moises Salazar: Seller financing is a negotiation and can be anything the two parties agree to.

I now have a duplex, and a triplex and actively working on acquiring my third.   

It's a tough situation for all parties involved.

The third coach was an ok fit and did actually own properties. 

After a third infraction, you terminate their lease and move them out.Take control, or they will control you.