RETIREMENT LOAN -$50,000 from employers defined contribution plan. 5 years, at 4.5% about $950 per month.

Her contribution is to the down payment (10-20% of purchase price), plus closing and rehab costs.

A tenant that has to contribute part of their own income towards the rent may decide not to - and then you need to be involved with their caseworker and the "system".

How much should each person own and how much should each person contribute?

At that point, I would be contributing my own cash for the rehab and place a tenant in the property...If you have some references to more content on this topic you could provide, it would be much appreciated.

The condition and local comparable sales contribute to what your tax assessment is.  

Offer submitted at price higher than suggested here (no disrespect to those who have contributed), however, one reason is the built-in equity that appears here.

So I am considering local down payment assistance programs that might let me contribute a minimum to down payment and keep the other lump sum for repairs and extra mortgage payments.

You will need to get a TB that is willing to buy it at probably around $113K to keep the seller form having to bring meaningful amounts of money to closing.  

I look to continue to acquire oil well working interests but also build a portfolio of rental property (both residential and CRE) and look forward to learning from and contributing to the Bigger Pockets community.