Hi, I'm very much in the same situation. Currently planning a 3 month trip for summer 2016 from Venezuela around to Ecuador, Peru, Chile then back through Bolivia to Brazil. My plans are very much still in their infancy but i however have most of my gear and a ton of maps that i picked up from amazon (most of which are nat geo travel maps, would recommend). I really want to visit the amazon for a period of time, preferably to spend time with a small tribe that still practice bushcraft and not farm cattle for McDonalds, as well as the obvious other sites along the way such as machu pichu, the nazca lines and salt plains of bolivia. I however have yet to look into the legality of wild camping in the various aforementioned countries but as you said even looking through reddit there seems to be minimal information regarding this topic, despite it's popularity. I know that none of this is by any means an answer to your question but please feel free to pm me anytime if you're interested in sharing information, i.e. gear, routes etc. Good luck! Edit: http://www.amazon.co.uk/Peru-adv-Adventure-Map-Numbered/dp/1566955483/ref=wl_mb_wl_huc_mrai_3_dp this is the link to the peru nat geo map, can find the rest from here