My research to date is leaning towards 2 - 4 MF along the lines of a "fixer upper". 

I don't know about your state but mine (TN) has a lookup tool that will show you the agent's original license date, the brokerage incorporation date, etc. 

Of course, every owner's situation is unique and factors like the legal entity involved, purchase date, adequate passive income that can be offset with the cost segregation study, etc., will need to be considered.

When an owner passes away, the property’s tax basis is reset to its fair market value on the date of death (this is known as the “step-up basis”).

The capital required for Denver, and limited cash flow makes it a tough market to get your next one.

Cons - Risks as stated by others, can limit which renters are looking at your house. 

Reliability of Regrid Zoning InformationIs the zoning data provided by Regrid accurate and up-to-date for development planning?

See Jason Alexander's character on "Shallow Hal" for a perfect example.He criticizes his friends who date attractive partners, accusing them of being shallow or warning them that "it won’t last."

Renter's Insurance is a cheap date for the tenant; it protects their security deposit and assets. 

She had a move out date of June 30th.