While the Gen II Kifaru's are great packs, the Gen I packs can be had for half the price used now, and will do fine for what you need.
Gen I frame with a Hill People Gear Highlander and a sill nylon drybag will come in around 5 1/2 lbs, expand to carry 12 plus days of gear, and haul 100 lbs of meat. For a daypack gives you 1000 Cubic inches inside, and the room to use as a compression panel for extra jacket etc.
If you shop around, this should be doable for $400.
Not as spiffy cool as a new Nomad on a Duplex Gen II frame with all the bells and whistles, but will do everything you need it to.