Our initial goal has been to buy a property every time the Army relocates me (roughly every two years) and rent it out afterward.

This step by step process is all laid out in Scott Trench's book "Set for Life".

This means you can sell, lease, or pass on the property as you see fit, just like any other property owner.Full Ownership RightsYou have the same rights as a Mexican property owner, including the ability to sell, lease, transfer, or mortgage the propertyLegal SecurityThe Bank Trust is a well-established legal mechanism in Mexico, ensuring your investment is secure and protected under Mexican law.Renewable TermsThe trust is set up for 50 years and can be renewed indefinitely, allowing you and future generations to maintain control over the property.Estate PlanningThe trust makes it easier to pass the property on to heirs, simplifying the inheritance process and reducing potential legal complications.Although the process might initially seem complex, it is entirely managed and supervised by a reputable banking entity.

Quote from @Matt McNabb: I'm a solid $400k/yr job in NYC and have $250k to begin investing as my first step into building a portfolio, although I don't have time to be a landlord so I have to account for management fees.  

@henry Clark has posted on BP exact detailed steps to create a self storage facility.  

Quote from @Chan Park: It's time to step and be a Landlord, as uncomfortable as it may seem.

Could seller finance (not recommended) to reduce initial burden and spread it out over time

If you have extra cash, payoff the initial mortgage without adding more loans.

One thing that did provide some reassurance is that we took the initiative to verify they own the property through a county property search.

(i.e. initial decorating and painting, bookings, rate structures, marketing, bookkeeping housekeeping, etc)?