You may find it hard to find a boat big enough to take on three crew. Much easier with one or two people. A lot of boats go to Mexico and a fair number to Panama. After that not so many. A few go as far as Ecuador and that is about it. Virtually no one goes further south than that since you are going against a very strong current and Peru has very few harbors. If people want to go further south (Chile has lots to recommend itself) they typically head offshore to Galapagos and Easter Island and then come back to coast at whatever latitude they want to be at. But the number of boats a year going this route is very small.
Finished the circumnavigation in early February in Grenada. Have to work on a book project for the next several months so the boat will be waiting for next year.