Thanks for the "heads up" on Guyana, Fast103. I'll be keeping that in mind. Have a great ride to Ushuaía. I envy you, you will be going through all my favorite countries - with Peru at the top of the list.
Thanks, Throttlemeister, for the advice not to ship to Venezuela. Also, besides having a US passport, I have a nice, red EU passport, which makes it easy to get into countries like Brazil, Bolivia, Chile and Argentina without a visa and zero cost.