[pct-l] Arc'teryx backpack (it weighs 6 lbs) - advice?

[L C]

I'm planning a long CA section hike this summer, and have been planning to
use my Arc'teryx Briza 62 women's pack. I ADORE this pack and it has served
me well on previous backpacking trips (none of those were in a hot
climate). The problem: it weighs 6 lbs.

Any advice on the trade-offs for a lighter pack? Budget is an issue, so
I've been hoping to avoid buying a new (lighter) pack, and in addition,
I've had problems with packs before and finding one that fit me was a
relief. But I'm concerned that a couple weeks in I might end up trading out
for a lighter pack anyway to save a few pounds and/or to be less hot.

Any advice - especially from women hikers? Has anyone used a similar pack
successfully on the PCT?

Thanks all!

LC