If you are looking to find a property or two he is an excellent resource and great realtor. 

I have an Excel spreadsheet set up to put in all the information.

Both of those  are excellent ones to start with 

An excellent book on due diligence: Brian Hennessey - The Due Diligence Handbook For Commercial Real Estate: A Proven System To Save Time, Money, Headaches And Create Value When Buying Commercial Real EstateIt's reasonably in-depth but a lot of this stuff one learns from experience.

HOWEVER, your definition is an excellent one and if investors reading this paid attention, they would avoid a lot of the scam companies who we read about on here daily.As for your second point, there are several very high quality companies who have been operating for well over 10 years who have built their entire brands on their reputations for service and excellence. 

I hadn't thought about things like exit strategies or tenants rights or all that stuff (which was naive).

If you want to keep it for a long time, , with that excelent interest rate, you can't rally go wrong on this route either. 

You can buy a property and take over the financing and then sell it for more using what is called a "Wrap" in some parts of the country or "all inclusive deed of trust" in some areas and "owner financing" in other parts of the country.

However, after analyzing data it provides excellent cash flow of about 14.5% COCROY and long-term tenants albeit under rent.

Shoutout to London Ontario REI Matt McKeever for his superb youtube channel which is excellent for newbies, I feel like I know the guy after listening to him for many hours these past weeks!