"As I recall from your previous thread, the big question was (and still is) what you mean by four season."
BY FOUR SEASONS I MEAN THIS: http://www.wunderground.com/global/Region/SA/Temperature.html
http://www.wunderground.com/global/Region/CA/Temperature.html
"Four-seasons tent usually means something that can handle high winds and snow-loading. Will you need this?"
I ASSUME I WILL ON THE ANDES/IN PATAGONIA.
"Four-season sleeping bag (as pointed out previously) doesn't exist. Winter bag means comfortable in temps well below freezing–this will likely be too warm for summer conditions. 20* bag is often good compromise for conditions not too hot or humid in summer (e.g. summer in western US mountains), not much below freezing in fall/spring/early winter."
WOULDN'T IT BE BETTER TO GO WITH A WARMER BAG THOUGH AND USE ONLY A SLEEPING BAG LINER + WARM CLOTHES IN SUMMER/SPRING?
Are you really going to operate in very cold, very snowy conditions with a strong likelihood of winter storms, esp. given that you describe yourself as "very inexperienced"?
PROBABLY NOT. BUT MAY BE I'LL ACQUIRE SOME EXPERIENCE ON THE ROAD, BY THE TIME I'LL GET TO ARGENTINA. :)
"The REI Ten Essentials list is standard and solid. Their "Beyond the Ten Essentials" list has some items I consider unnecessary and a few I consider worthless. Most people buy from REI for their guarantee and easy return policy–they aren't the least expensive option and won't carry the lightest gear."
WHICH WEBSITE WOULD HAVE THE LIGHTEST + CHEAPEST + BEST GEAR?
"What kind of total budget are we discussing here for acquiring every single piece essential kit?"
I DON'T EVEN KNOW HOW MUCH I SHOULD SPEND! :)
"Have you been backpacking at all yet?"
JUST THE KIND OF HOSTEL TO HOSTEL BACKPACKING TRIP.
"… and where are you going specifically? Central America is mostly tropical but are you planning higher elevations to the Andes, .. the Patagonia region? Is this backpacking (both backcountry and hosteling) or will their be some mountaineering involved? For "just" backpacking the tropics but also a bunch of snow, I'd check out Tarptent.com with one of their models with a crossing snow pole .. relatively cheap and light. For actual mountaineering (ropes, harness, etc..), you'd likely need to share a mountaineering tent with someone experienced in all the "funness" that entails. Just moving my backpack around a bus was a pain, so you want to keep everything fairly compact as well as a backpacker, … so practice before you go. Any mountaineering, find a group"
NO MOUNTANEERING BUT POSSIBLY ANDES + PATAGONIA. I DON'T THINK I'D WANT A TARPTENT. A SHAME THE WEB DOESN'T RENT EXPERIENCED MOUNTANEERING BOYFRIENDS FOR TRAVELLING USE ONLY. :-P