So for example, here in Greenville, South Carolina, we have major auto manufacturers, BMW, Michelin and a whole host of smaller companies that manufacture parts for these larger facilities at BMW and Michelin.

Clearly there are companies who are thriving with in-house management.

We've had great tenants, a good property management company, and few expenses over the past few years.

On top of using softwares like AirDNA, it would be a good idea to look into actual listings in the area and check their occupancy rates

Trying to determine if it’s worth the time and money for the PMS software to help sync calendars and use their automated messaging.

Would the company in discussion here know how to do this?

I've heard about turnkey companies (properties that a company owns, is already rented, and ready to sell with tenants in it) but am not familiar with any names of companies.

Both of those criteria should be searchable to some extent via software/apps like Propstream.

Right now you are the licensed, insured, have  o experience and if you work remotely off little in the way of hands on at a property.Honestly someone could hire a Virtual Assistant from a other country.I would try and build your resume by working for a company for now.

If it makes a difference, the DIL could purchase in her name or in her construction company's  LLC name.