I'm from wi and have everything for whitetail hunting here, wondering what I should prioritize for gear to get into western hunting? <SNIPPED STUFF> I have: 10x Binos, 6.5 prc rifle w/3-15 Leupold w/CDS; shooting sticks. <SNIPPED STUFF>
This is actually PERFECT right here, assuming the 10X Binos are high quality glass (very clear, optically speaking.)
People have hammered home the 'good boot' theme, so let me push the "good socks" theme. Cotton is wrong. You need some 'sport socks' that wick moisture. Blisters will happen no matter how great your boots are if your socks are wrong inside them.
LAYERS of clothing! Not big, bulky items. It will be freezing cold at night and in the AM, then get warmer (usually) during the day. Layers allow you to adjust throughout the day to stay comfortable.
A back-pack is needed and folks have already given you some good suggestions.
If you hunt in the mountains, you will need SUNGLASSES. You will need sunscreen. Above 5,000 feet, you sunburn quickly. And you will need aspirin/tylenol/excedrin for the headaches (due to altitude changes and dehydration.) Speaking of hydration, you will need a lot of water. It is very dry in the mountains and you will sweat a lot, but won't think you did because it will evaporate off you so quickly.
A tripod and spotting scope are great...until you have to pack them in and out along with everything else. You can live without these things. Weight is a problem when you are at altitude, going up and down mountains. You will be out of breath and tired and will regret bringing anything you didn't absolutely need.
I'm excited for you. Hunting the West is a great adventure. On the one hand, it is just like hunting back in WI. On the other hand, the mountains and altitude can make it seem like a whole 'nother type of hunt altogether. You are getting great advice so far and I'm sure there is more to come. Search this site because there was a long thread recently about prepping for a Rocky Mountain elk hunt and all this 'territory' (what to bring and expect) was covered there.