I am impressed by your dedication to this.
...
Not entirely clear. Like body weight. Not paying attention, to many burgers, you become overweight. Paying too much attention, strict diet, you become anorexic.
As I said, I was motivated to post my Q&D packing list in reaction to the 130L packing system that was mentioned. I've ditched my panniers over the past 3-4 years. Back at first, front this past summer. And I can only tell that a lighter kit has meaningful impact when you board a train/plane or when you have to jump a fence, walk upstairs, etc. (In some/most airports you can use caddies across terminals - that's the pits).
Anyhow.