We always purchased only the charts needed until we flew back to the states for a visit as we never knew where we were going next. As I understand, their going to Panama. If that's the case,,, unless you're on a delivery,, the Eastern Caribbean is a must see. Head east and down through the Virgins, Windward and Leeward's to Trinidad (beam reach) and then West (sleigh-ride) to Cartagena & the San Blas).
Damn Rod,,,, the Western Caribbean of Mexico, Belize & and all the rest is great and not to be missed. You'll need to do both. Wait a minute,,,,, Cuba,,,,,,, Cayman Islands, Jamaica,,,,
Rod,,, you're going to have to spend at least 3 years in the Caribbean.