I would not get a Kifaru Tactical frame for 50lb loads. They’re are very stiff, designed to carry very heavy and awkward loads, which means they’re not as comfortable with light/moderate loads.
There’s also far better frames on the market than Kuiu. I’ve had some terrible experiences with those.
If you won’t be packing much meat, I’d consider one of the Kifaru internal frame packs like the Kutthroat or 357 mag. Those are the most comfortable packs I’ve ever used at 60lb and under loads. Exo frames are also petty comforable with light loads, as well as the Kifaru ARK frame.
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