They are effectively the same.  

How can I effectively address the concern of losing Airbnb reviews when convincing a potential client to switch from Evolve to my local property management company?

It takes actual thought and a programmer's mind to be able to build a CRM into something that's actually effective (sure a basic person could setup a phased text message or email automation, but it's tying everything together with opportunities, automated campaign re-entry/follow-up, social media integrations/automations, etc that is the real value).

With a PM in place, this situation should have been managed more effectively.

LOC's can have negative effects on your future purchasing power if not set up correctly and keeping in mind you can "never" use an LOC as a reserve or asset.It will always be a debt burden and can over inflate your back end debt ratios depending on the W2 income and your liabilities.

Question: When buying an old building (constructed in 1900 with an effective build year of 1960), what should I look out for and ask about? 

You have to keep in mind that a plex will never be valued the same as an SFH, and renovations may not have the same effect on the value as an SFH.If renovations are not needed right now, I would work toward getting the rent to market for the as-is condition and then renovate each side when you have turnover. 

Looks like is passed in 2022, effective this year.

Understand how costs effect your deal.

My investment partners and I have made considerable investments in Mount Airy over  the past few years, worked with a number of brokers on acquisitions and can honestly say not a single one has been able to effectively articulate our neighborhood investment thesis which tells you how challenging the neighborhood is.