What are your guys opinions on Preferred barrels? I have never heard of them, the only aftermarket barrel I have ever bought was a Bartlein stainless.
I only have experience with Krieger, Bartlein, Proof Research, and McGowen Precision barrels. I have heard excellent things from my friends that shoot Preferred. If you choose any of these, you can't go wrong. If you know you only want carbon fiber, that narrows the choices a bit (I personally would go with Proof there without hesitation). If you want a stainless barrel (you can leave it as is or have it cerekoted any color you like), then Proof is still great but choices are limited so take a look at the others I mentioned (I still used their stainless sporter barrels for my own recent custom build). If rifling is important to you, know that some barrel makers do both cut and buttoned rifling but I recall that others only do one or the other (McGowen used to be that way and only did buttoned).
For a hunting rifle that you're going to be packing with and strapping down and such, I would personally keep it simple and lightweight with a straight sporter stock. I LOVE my Grayboe Outlander stock and they inlet for all the best custom actions, barrel contours, and bottom metals. For the price, I think there's nothing better out there. You can spend more and get a slightly lighter stock from others but for me, the fit and feel of my Grayboe is perfect.
Speaking of bottom metal, if you're planning on a BDL style hinged floor plate (my preference as well), then I would buy a Hawkins Precision Oberndorf bottom metal. They are very high quality, the latching mechanism is excellent and will never pop on you, and the release is very nice and won't ever get accidentally bumped. You can get it in anodized black or raw aluminum if you're cerekoting to a specific color. Everything else they make is pretty rad too and I love supporting independent businesses like them. I'm also a Colorado guy so it feels local to me to boot.
Good luck and let us all know what you end up building! Lots of good advice here from everyone. Attached are a couple pics of the build I just finished earlier this month with Benfield Precision next door to you in Idaho: Zermatt Origin, Proof Stainless Barrels, Grayboe Outlander stock, TriggerTech Special Two-Stage, Leupold VX-5HD, Hawkins Precision bottom metal.