The 16 year olsd is probably going to be having friends over quite a bit that spend the night.....and of course the adult companion (male or female) will be there a LOT with a child of their own.

If it were me I'd probably talk to the child in law and just keep it brief.

In which case its doubtful they will pay significantly more to invest in their child future.The conclusion that I draw is that when buying 2/1's, the school district should not be a big consideration.

As part of her offer, the FHA buyer sent a note explaining her situation (single Mom with fiancé willing to adopt her child) and a video showing who they were and how this house would make their life better.  

At that point I figured if I was going to get 15 properties (5 for each child) I might as well go all in and shoot for 100.

You have obviously never met a single mom who puts her child in a before and after school program and adds a babysitter 2 nights a week to pay the rent and just get by. 

I have a very active child.  

I learned the note-taking trick from a school teacher who protects himself from any potential child/parent accusations with journals on each child.

So one reason would be that eventually my wife and i may want to have another child but in our current situation our unit only has 2 bedrooms.

As a Canadian investing in the U.S.A. you will most probably want to have a Canadian Controlled Private Corporation (CCPC) and an entity incorporated in the U.S.A. which is a 100% owned subsidiary (child) of the Canadian corp.