Roatan, Honduras
Then trip on friend's boat to small island owned by Colombia (forget the name).
Fly to Cartagena, Colombia, and then on to Quito, Ecuador.
From there about 7 weeks by bus working down to Patagonia.
Lima, Machu Picchu, Cuzco, Lake Titicaca, La Paz, and Santiago along the way.
Traveling with one of my teammates from college - we've both been out working for a couple of years.