Camo colors will absolutely not affect the outcome of your hunt.
Get into the best shape possible. Do buy some quality clothing that will dry quickly and keep you warm and comfortable. Kuiu, Sitka, whatever floats your boat.
Don’t pack too much stuff. Have an experienced buddy go through your pack and make sure you don’t have too much packed.
Get a lightweight (but quality) pack, sleeping bag, a sleeping pad, tent. These items plus clothing will account for the most weight in your pack.
Shoot for total pack weight with food, water, gun, etc 50lbs or less. Otherwise you will be spent by the time you reach camp and have a tough time actually hunting from there.