You will have employees, customers, stakeholders in investors.  

What kinda of company does this?  

KBKG was the first company ever to launch a self service software for properties this small and it has been through IRS audit numerous times.

Could anyone recommend a company who structure trust for seller financing deals?

Likewise, partnering with an investment-friendly title company is crucial.

Both options have merit: the standalone approach allows for independence and customization, while the duplex route offers potential rental income.

During that time many homeowners block the rest of the dates and have the new PM company create the new listing and gather bookings in.

The one thing I did find out when I had a management company manage my property a while ago is that there are people who rent properties full-time during the off-season at a greatly reduced price.   

Another way to find a property management company that knows those zip codes is to search rentals in those zip codes on Zillow or HAR and see who has many listings and see how they are presenting the property to the public with their pics and description of the properties.

I can't recommend you one company but if you search in google you will have a popup of some.