There are good deals in every market so not sure if you are referring exactly as best, but if its in terms of price point then the midwest offers some good options @Chris Schoonhoven

I want you to be aware that a government source that your tenant may refer to may be confusing.

But if you are using seller financing and a regular CRE loan, the seller will need to be comfortable subordinating.

Is there a form or reference I can make to help him know how to do it..

Sure, it's 1954... there must have been a zillion cases and whatnot since then.And with Section 199A, you can use either the safe harbor or facts/circumstances to support 162 (frankly, the safe harbors are anything but safe, I'd take my chances on simply arguing continuous, regular, profit motive, etc.).Perhaps DM me.

Most investors I work with do either a regular refi DSCR loan or, take up to 75% or 80% of equity out of the home through a cash-out refi. 

I would start off by getting several quotes.I can tell you that my regular AC guy charges 40% more than the guy I go with.  

While I would love to take credit for the great guest blog post that he mentioned, I think he is referring to the one our Air Force brother @Michael Barnhart, who is also here in England, wrote.

If you refer to the screenshots, you’ll see that my CSM even admits to the lack of performance from my cold callers.

It looks like your seller wants to seller finance the deal to 'be the bank' - which can be great - maybe you can negotiate a better deal on interest rates than what is currently going on in the regular market - which would be awesome.As for which home first - I would definitely go for the duplex you are already in.