Hi, roughly 10 days from now I'll be going on a trip to Brazil and Peru. First, I'll stay a few days in Rio de Janeiro, then we'll go to Lima and then to Cusco and the Inca trail and Macchu picchu. We might also go on some rain forest trip. My first thought was to bring everything I've got, but then I read the scary story that Wikitravel call "Staying safe in Rio" and started to consider only bringing a point and shoot. I'll certainly leave my 300/2.8 at home, but at the same time, the Barra forest is very close, and there's also the reserve with the golden lion tamarins just an hour away from the city, so I would certainly want to have some long lens with me. My current idea is to bring the 9-18, the 12-35, 35-100 and either the 100-300 that I've never been very happy with, or the 150/2 and the EC-20. The FD 400/4.5 could also be an option. I might also bring the 25/0.95 for low light. If I don't bring any 4/3 lenses I could leave the E-M1 at home and bring the E-M5 or the E-P5 instead. Of course, not bringing everything also means less hand luggage and less stuff to carry on the inca trail. Any thoughts? Am I worrying too much?