Go to Etsy and search for "rental property tracker," and you will find hundreds of nice spreadsheets to track 10-20 rentals, usually for under $10.Software has extremely helpful features like online payments, marketing syndication (click a button, and your property is advertised on multiple sites), electronic document review/signing, maintenance tracking, and owner reports.

Once this is all done, I'd also report the broker and both agents to the real estate board.

Well, think of the concept of dollar cost averaging in stocks — instead of buying stocks one time, you invest consistently.

Get a few quotes. and if you do not do it, when you go to refinance into a long term loan the appraiser will likely mark the report as "subject to" a structural engineer report of the foundation. and you will not be able to refi until you have done the  work that is required. 

The advantage to long term renters is the consistent cash flow, lower start-up cost.

There’s an entire “industry” consisting of gurus, attorneys and title companies that provide services and advice for transacting real estate without paying off the existing lien(s).  

A line of credit would cost me 8.25 currently and I could consistently lend it at 12-15 probably.

This team consists of an Investor Focused Agent, Lender, Contractor, and PM.Read this article on the "core 4".

There has been strong population growth, consistent appreciation, and a robust economy.

An accumulation of those responses can sway you with these consistent replies but they won't help most people.