What to get:
For a base camp, Last year for the first time I bought a fold up cot which came with a foam pad. Previously I had slept in the truck or in the tent on the ground on a mat but the Cot kept me off the ground and the pad added warmth and comfort. I also used a small propane heater in the tent for the first time. Another luxury for me anyway that I will probably continue in the future. A cot though requires a lager tent but the upside is that the tent is also taller so you are not having to bend over to walk and you can sit up without your head touching the tent roof.
I have a smaller 2 man tent, fairly light weight but not super expensive for setting up a spike camp which I also did last year. A down 0 degree sleeping bag is nice. Packs smaller and weighs less than the the other types of fill. Hyke and Bike off and on has a good sale on the down bags which is where I got mine during the sale of course.
A lightweight cheap collapsible 5 gal water jug from walmart is great to carry. If you end up doing a spike camp carry it in empty and camp near water. You use a lot of water hiking and camping and cooking and cleaning up.
You gotta have a Jet boil or something similar to heat water and in turn your food. It will get your water boiling quick even at altitude. Freeze dried food and some granola bars are great. I'm not a coffee drinker so I carry some packs of Hot chocolate mix which is like treat while camping. Some of the dehydrated soups are handy to carry too. Jerky is always great in the field.
Most don't think a lot about their socks but socks make all the difference when you walking a lot in the hot, cold and wet weather. I've found the Alpaca socks from "Alpacas of Montana" to be awesome. Very warm, wicks moisture much better than Wool and don't stink after a few days of wear. They fit snug and don't ball up and they wear so much longer than any socks I've ever owned. Pricey for sure but they seem to wear forever. I'm not exaggerating either. They make a warm hat too. The hat won't win any style contests but keeps my head and ears warm.
Chap stick is kinda of a must. I never have need of it in NC but some places out west your lips will dry out without it and crack.
I always carry a compass and GPS. A compass weighs almost nothing but can save you if your GPS craps out or you loose it. I also as of late carry a Garmin Inreach. It allows me to text to my wife or anyone else even where there is no cell phone service and has a SOS button you can push in an emergency so you can be found quickly.
My wife actually bought it for me so she I could let her know at least once a day that I was OK.
Of course you want bear spray in Grizzly country but in Colorado you won't likely need it.
You need to have some game bags to carry with you while hunting. A small to medium cooler is nice, you can buy some eggs, soda, beer or what ever for use at your base camp. But you don't want to leave it outside your vehicle or in a tent with food in it most places or the warden will write you up a ticket. A large cooler is needed to carry your game home.
There is plenty more you will probably need to bring I just wanted to touch on a few of the more important gear.