I got my initial questions answered for the most part, but now that I am exploring the option of REI with that money it just brings up a whole other level of questions. 

Looking for a reputable Property Management firm in the Lehigh Valley PA or Phillipsburg, NJ area. 

I would explore that closely.   

I am looking for a reputable licensed home inspector available in the City of Baltimore.

We bought a single unit and have held for over ten years, but are now looking to expand our portfolio at this point and exploring all options. 

I too am leaning toward the Lauraville area but also still looking explore more of the areas around Hamilton, like Waltherson, Morgan Park, Belgrave, Cedmont. 

She's a reputable agent I'll leave it to her.

Please find one who is not afraid to explore the downside dangers with you--one who wants to help you buy five houses and not just one--one who is doing enough business to not ever send any sales pressure your way.  

So far my screening and qualification process has helped protect me from falling prey to those who are trying to get their pets into our properties under false pretenses.Check out the numerous BP threads where this topic is explored in depth.

My strategy for property management is to find 3 reputable companies to work with just in case I'm having issues with one of them I can take my units to someone I'm already working with.