Option 1: Cash offer of $160,000 for the houses + $40,000 for car, business, delivery truck. Total $200,000 CASH NOW. Find a buyer for business and VRBO the properties. .
Option 2: Lease purchase. $10,000 now or something close (no more than $35k structured to buy out the business and vehicles). $500-1000/mo then $200k in 1-5 years.
Much of this will depend on knowing what they really need/want. And all this is said without knowing what nightly/weekly VRBO rates are in Panama.