sargent
WKR
I hunted early archery in CO for the first time this year and was in a similar situation. I wore some cheap Wal Mart polyester pants. I think they are made by Swiss Tech and cost around $17. They worked great and would be about right for early rifle with the addition of a merino base layer. I also used and liked the OR Crocodile gaiters. I used a Slumberjack Bounty 4500 pack that I picked up for $100 when they were switching to the Bounty 2.0. It might not be as nice as some of the packs you are looking at, but it got the job done for me carrying camp while hunting and packing out meat and antlers. The 2.0 goes for about $300. I'm not sure if they were on your list, but I would definitely take trekking poles (at least one.) It's hard to explain how much stability they add, especially packing heavy loads of meat downhill. For water, I used two one liter seltzer water bottles, a 5 liter collapsible water bottle I bought from amazon for $10, and aqua mira drops. This system is cheap, light, and simple. It worked great for me. If it gets really cold, you'll need to use the tablets so the drops don't freeze. This year's hunt was my second for elk, so I am no expert, but I will tell you what other folks on this site told me (They were right). Get what you think you need and go hunting. You'll soon figure out what works for you and what you need to change or upgrade. Have fun and good luck.