Free: Contests & Raffles.
merino wool base layer. Wool Pants. Fleece top. Puffy jacket when needed. Rain Gear cover ( Kuiu Chugach). Bulletproof.
I picked up last year the Kuiu 210 zip off long underwear. They are perfect to keep in your pack and just throw on if you are going to sit for a while. You can just drop your pants without taking your boots off, throw them on and pull your pants back up. That along with a puffy on top kept me much more comfortable last year