Gear is fun, however most of us have homes, so we can keep it there. I carry what I can in a 45l sabre with sidepockets. If I had a mule, I might carry more
3 season solo kit comes in at 8kg, without water in a 50 ltr lightweight rucksack.
The sabre 45 with sidepockets is around 65l. I have no problems packing kit for a four day trip into that easily without anything strapped to the outer. Although the stella has to be abandoned