I gave the agents money for materials upfront and supplemented that when we decided spend more on flooring.

I wonder if it could be worth it for when I am away on vacation or as a supplemental property manager.

My end goal is to have as diverse of a portfolio as possible and possibly supplement the income of my current job.I have been reading about how fixing and flipping is a JOB.

INERPRETATION: This Addendum supplements the terms and conditions of the Lease.

One option is to keep them all and use the rent to supplement my pension. 

Your peer and mentor network, and RE literature options, should be an occasional supplement - not a crutch.

To begin with, I am not seeking cash flow to supplement my own cash flow, but to be reinvested towards future property purchases. 2) Long term I would really seek to own a fairly large portfolio of rental properties (Single and Multi-Family) that will initially replace what would be my wife's income and then potentially mine down the road. 

I'd rather leave the properties that need a lot of work to the house flippers (and even those seem to be selling at 177k), I'd prefer to not start out with a huge monthly expense while coaxing a house into positive cash flow with supplemental money, and putting half or more down will make getting started like trying to drive with the breaks on. 

A general Business Plan can be supplemental material that helps to communicate your overall strategy, marketing plan, neighborhoods of interest,  company makeup, etc. 

These purchases are often times part of a investors retirement plan, supplemental income, etc.