We don’t know any PMCs to recommend in the area mentioned, but since selecting the wrong PMC is usually more harmful than selecting a bad tenant, you might want to read our series about “How to Screen a PMC Better than a Tenant”:https://www.biggerpockets.com/member-blogs/3094/91877-how-to-screen-a-pmc-better-than-a-tenant-part-1-services-and-processesWe recommend you get management contracts from several PMCs and compare the services they cover and, more importantly, what they each DO NOT cover.

I know an individual who paid 657k in taxes last year because he had his property in S-corp.

@Lydia BarIt depends on the level of experience the individual has with both and the type of loans you need to get. 

Main challenge is the impact to each individual's DTI as we'd all be carrying a "second" mortgage when it comes to any other loan application.

Obviously, much of the following is dependent on the individual, but non-owner occupied investments can be in the 3-4% range (this rate can even go lower if it is owner occupied!)

What I learned is that though a process can be individual, there are principles anyone can follow that will help them achieve success in their personal journey.What does that mean?

Based on the costs/expected rents of each individual unit, all are decent investments but I know I could do better in this area. 

Just to clarify, are all the real estate agents they recommend individuals who use and are familiar with Bigger Pockets?

@Michael Saunders I haven't invested in any crowdsourced sites but... this is a very different type of investing than buying individual properties.  

These units, when renovated, would be worth good money if sold as individual homes - Big demand for these types of properties in my area.