I have not owned a single family rental but I feel that if I can continue to demonstrate to myself that I can manage a multi-unit property, I could no doubt manage a single family home.  

Thanks :)As`Steve pointed out before, since the owner is at the threshold of the tax treatment, selling 1% is pretty much showing an intent to sell and tossing the 99% over to be treated differently, doubt seriously if the IRS would buy that if audited.

No doubt people will have failures, or at least times when things are not going well.

They do not want the posts on there new cement driveway (the driveway that encroaching on my property already) 

Doubtful or you'd think they would have mentioned it at some point. 

Frankly I don't think there is much reason to doubt that growth will happen.

I saturated myself with them while I was running errands, and feel it was a great use of time to cement my knowledge.

I doubt anything.

Now I'm starting to doubt him.

You'll basically have to buy them out of the lease unless there is some kind of stipulation in the lease which allows for early termination by the owner/landlord (doubtful).