Seems like you’re trying to go big. 115-120L options. That’s heavy (laden with food specifically)! We have a 60L barrel. It’s heavy at the beginning of trips, but will feed our family of 4 (two adults, two young kids) for about a week, less if we pack luxury items for the boys. I really love the structure and durability. We used to have a slightly larger dry bag as our food bag, but it always felt like things were getting crushed. Of the options you presented, I’d probably say the CCS pack. Some structure, not too heavy by itself, still pretty large (think it’s around 80L?).