I agree with the advice you have been given about how hard it is to get from Panama to Curacao. Any competent captain you might hire would be fully cognizant of this and able to tell you the options and difficulties.
Heading back to Lake Ontario for this summer. Relatively few stops along the way from Grenada. Martinique, Guadeloupe, St. Martin (must have something to do with the French food), then Bermuda, New England and up the Hudson/Erie Canal. We were going to go via Newfoundland and Labrador but June remembered that one of the kids is getting married this summer - details, details!