A seller financed (SF) note is not the same as a purchase money mortgage, it is funded by equity based on an agreed sale price, this makes it an installment loan and a different animal than a cash funded note.Institutional notes have a due on sale clause, an SF note should have if it is common for your jurisdiction but it may not have.

Am I on base with my recommendation?

I realize that everyone is going to have different input and advice based off of their experiences, but I'm looking for assistance as to whether something I'm including is a definite NO NO, or if something should be added in for increased impact. 

You will only get so many based on current rules and your debt to income ratio.

@Harry Gamble The cost of insurance will vary greatly based on the individual property types, specifics, and locations.

Run the numbers and buy based on what is and not on a story of what will be or could be.Was it a project that got stalled?  

@Ben ZimmermanThe peace of mind factor was less "hassle-based" and more "financial-security" based, which is why I mentioned that having my primary paid off checks off the latter for me.  

While you are driving you can put door hangers on houses that look like good candidates and also talk to people and pass out business cards.

The study was conducted by Zimmerman/Volk Associates, Inc. based in Clinton, New Jersey http://www.zva.cc/ .

It's oil based and costs $20 a quart.