gtriple
WKR
I'd really recommend to just buy a used Exo K3 frame and the Crib Load Panel.I am planning on doing a basecamp this year but next year I will be backpacking in a few miles so I want something I can use for both.
K3 Crib Load Panel
The K3 Crib Load Panel is a versatile accessory that enhances the frame's ability to secure heavy, large, and/or awkward loads. The Crib Load Panel prevents heavy loads from sagging, ensuring optimal weight distribution and comfort.
exomtngear.com
You can just use any cheap backpack for a daypack from a basecamp for the whole season. Then when you kill something, just process it, hang the meat, and then hike out and swap to the frame.
Then add a used bag when you find one and have the budget.