Ben you have to go a second generation landlord back.The first one you talked to is trying to get rid of them.Talk is cheap.I would want a large deposit to mitigate risk.On the investor nation website I have never done business with them.However it took me under 1 minute to find a page of their sold's with numbers playing up a 1 in 100 outcome.Their words below in between the lines.

Ben, I completely agree with your advice for Wade, and anyone else who suffers with similar problems.

What about the neighbor, can he sue me to pay for his fumigation.

Many have Ben sued, and most will be sued in the future.

Regardless of the situation with the restraining order, how would the remaining tenant have ben able to afford the rent (assuming they were splitting rental costs)? 

Ben

how can he refuse? 

Can he simply transfer the title/deed in our name if we were to do seller financing and pay him amortized over 15 years?

Ben, hold hands, kiss each other on cheeks, and live happy forevermore  :)

I agree with what @Bridget Brazelton and @Ben Rhodin that as long as the numbers make sense, why not buy a new build?