Your experience in solving challenges like this is abundantly clear in the level of detail you have provided. 

I'd use an abundance of caution on this one.

On the flip side you most likely would like to compensate them in form of $$$ or even listing you flip property with him/her once its completed.As far as you first question I don't have to much experience in that realm but from what I have read you would want to use the ARV ( After Repair Value Formula) do quick search for that and you will no doubt find an abundance of info on that subject...

I think many people get sidetracked and don't see the forests from the trees, meaning they get so fixated on the Trading leg that they never lift their heads and see the abundant possibilities and opportunities. 

It seems there is an abundance of professionals with young kids who go the house route, so before I cross it off my list, if you could just elaborate a little bit I'd appreciate it.

Or note investing.No matter what, you will need to educate yourself on another tool(s) for your toolbox of investing tricks.We live in a world of abundance; there's almost limitless ways we can make money if you educate yourself.

By similar I mean that they have the possibility of getting multiple mortgages, abundance of multifamilies, green light for house hacking, lower than 6% mortgage interest, and conventional loan rates around 8% for the down payment, lower if possible.

Today in most situations you don't have to talk to buyers employing these strategies because regular buyers are in such abundance to do deals.

Are rents higher than they've ever been with no homes available, or is there an abundance of rentals?

There is an abundance of wealth out there just waiting for you to claim it!