Planning on getting a bag in the next few months for a do-it-all/BOB. How many cubic inches are needed for 5-7 days? This pack might also serve double duty as a back packing bag too.
counter questions:
- in which seasons do you intend to use it?
- what kind of gear to you intend to carry / what's the occasion? hiking, hiking+tents, hiking+hunting, hiking+hunting+tents, hiking+climbing, ... 'do-it-all' can mean alot and nothing at the same time
- do you prefer comfort over weight? (comfort often means more volume)
- where is your weight limit when you carry something along?
I have the Kifaru Navigator and use a couple external pouches with it, and recently took it backpacking above 10k ft for a few days with the family. It's built like a tank and holds a ton of equipment. My pack weight was about 60lbs total and it rode very comfortably, including some rather steep ascents cross country. I had a double sleeping bag in the bottom compartment and still had room for rain gear in there as well. It's not light, but still not overly heavy either.
I've rucked a lot, both in and out of the military, and 4000ci is more than enough for a base pack, and you can easily add on another 1-3k ci with externals to fit your outing. Hunters may want more than it has to offer when packing out a hide or meat, but it's more than enough for standard use.