Start figuring out your pack now. How will you clean an animal if you get one. How will you then get it to the truck and keep the meat cool. Where will you take it to get processed. Cost of processing an elk varies but plan $250+ depending on how much you do yourself and how much custom products you get.
Tell people where you plan to go and stick with it in case you get lost. You might not be able to check in with cell phones so have a radio and a channel you will be on if you get lost.
I'd have a GPS with me until you learn the area and even then take it with you. Go in the summer and mark spots you think might be good after you know where you might be hunting.
Take extra gas for your truck. Take an extra sleeping bag in case yours gets wet. Dont forget a pillow. Always put your fires out completely...that means taking extra water to dump on it or having a source for water. Park officers will fine the shit out of you for leaving hot coals unattended at camp.
Take a copy of the regs with you to camp, read the rules, get an app or pre plan so you know when legal hunting hours are. Know your gun and scope, take shots you are comfortable making, not hoping you make. If you wound an animal give it every ounce of effort to find it.
When elk hunting Dont shoot a moose thinking its an elk. Always verify your target, people have been killed because people shoot at movement or shadows.
I have lots more but not enough time right now