Fly it if you can. I presume you have asked the seller for advice re flying in Brazil?
It may be worthwhile posing the question on some US-based aviation forum - there surely must be some US pilots who have ventured south of Panama.
Not many posts on here regarding S America flight that I can recall, however forumite "Ultra Long Hauler" is based in Ecuador - he may well be able to assist with Andes transit perhaps through Ecuador and on to Panama up the West coast. Suggest you send him a private message.
PS. Search Pprune for "Skyferry" or "A ferry bad experience" and read the threads before you hire a ferry pilot
