If I'm camping then I have a GoLite Pinnacle 70L, if i'm hiking between guest houses then 30L is ample.
It does not require many years of experience to go minimalist, but its not discomfort, just "if I didn't use it last time don't take it again", repeat repeat til you find you needed something you don't have. I have a Tarptent Notch for hiking-camping and the Tarptent Protrail for bike-camping with a custom carbon fiber pole I had made to keep it all as small and light as possible. I'm pretty much decided to stop taking a camp stove, just energy bars.
Phones and Anker Powercores and Powerport are so good now you can have an entire set of box sets in your phone for hours in the tent on rainy days and the odd pub lunch and their power sockets to recharge everything.
I tried solar twice this last year, won't do it again, just more Powercore is simpler, smaller, more reliable (as weather can vary but can control how often you pass civilisation and ration your phone use accordingly). I even shrunk from carrying a map to just downloaded offline maps. Last two camping trips.