Great story, thanks for sharing.
Your equipment photos gave me goose bumps. Change out a few items (mainly Trailwise external frame pack), and that's what I used in the late 1970s, including lots of military surplus wool. Unfortunately, I carried a lot of other crap - spare this and that, the usual story - and often had a total weight of 45 pounds for weekend trips!
In the early 1980s, I got lighter stuff, as a short-lived lightweight revolution went through the industry. Alpenlite soft pack under 2 pounds, original Nike Lava Dome trail shoes, Campingaz Bluet cartridge stove, nylon water bags with plastic bladders, minimalist Moss tents.
If you didn't take the kitchen sink "just in case", you could travel pretty light. The relatively low volume of that Alpenlite pack enforced a kind of minimalism, and my trail weight dropped. Unfortunately, as my gear wore out, or rotted, or permanently borrowed, or chewed by mice, I couldn't find lightweight replacements, until about 10 years ago.
I'm pretty amazed you still have all that old gear!
I still have a few bits and pieces around. For some reason, I'm very attached to the Chouinard Expedition Sewing Kit, even though I've never used it.