If it were me, I'd do a brand new deal with him directly at the same price point I would do it with a new buyer if he left .  

Hypothetically lets say I buy this house, do I pick up their old lease where the previous landlord left off?

By the time we left the property, my head was swimming with thoughts of how to pull this off. 

Seems like you have some home work left to do.

Building a trusted team whose goals are aligned with yours is vital.I'm happy to pay it forward and to discuss further and share my experiences both good and bad with anyone reading the post.

If so was the home you left to stay in the new SFH paid off?

How about we agree to end the lease at the end of the month and if you're out by then and haven't left any damage we'll give you back your security deposit and just terminate the lease at that point". 

This has left some of the plans of "change" in that corridor in limbo.

For turnkey that train left the station 2-3 years ago.  

Their place is full of stuff with little place left to walk around and smells bad.