You should always have the items you would need to survive.
What do you cary on a daily basis when you are at home? Even if you just have a knife, a cell phone and some cash, you have some form of survival equipment (you could not execute your ADL without them)
Look at the area(s) you intend to visit, then consider what the experts suggest for the anticipated environment(s).
There are a few things I never go anywhere without. They include: an Izula or some other small fixed blade knife, 3-4"folder, small sharpening device of some sort, SAK with 10' para-cord in a dense braid, firesteel, flashlight, 2-3 water purification tabs.
Design an EDC system and a PSK (personal survival kit) to fit the area you are visiting. Your kit can be inexpensive, and some of the items are on your original list. The important thing is how you organize them about your person in such a way that you have them on hand if they are needed, and they don't interfere with your daily activities if you never need them.
Unless it is expressly forbidden, never go anywhere without at least your knife and a firesteel. I have spent time in the Andes, and i would recommend a few particulars for you if, indeed you expect any high altitude travel.
1. Don't forget the hat or the sunglasses. A Quichua girl stole mine the first day, my scalp was fried.
2. If you haven't already, BREAK YOUR BOOTS IN NOW. Wear them every day until they are fully seasoned.
3. Hoja de coca no es una droga. 5 leaves, learn the ritual, and don't forget the llipta
4. Drink much, much more water than you think, and stay away from the chicha. Cusquena is okay, but the dark leaves a nasty hangover.
5. Do cary your PSK separate from your pack. this can be a small pack on your belt, or tucked in a cargo pocket.
6. Keep you layering clothes and your rain gear handy.
7. Listen to your guide's advice, especially if he/she is a local.
8. Llama, alpaca, and guinea pig are all delicious. Don't miss the opportunity to eat them while you can.
9. You though corn was corn