We are beginning the planning for a patagonia trip in 2015. We ride two up on a GS right now and have ridden lots of the U.S. Canada both paved and dirt. I have never ridden in south america and i am looking for any guidance offered. I need to state...we cannot afford a $15-20K trip for the two of us...are there options for us? Self guided looks doable, but again no experience at it.