7.62x39 is not adequate cartridge for a moose. It is not the caliber I have issues with but the amount of powder behind the bullet. It should have a bit more power behind it. 308 would be a good start in my opinion.
Also, as others said…avoid swamps, water and other difficult terrain or you gonna have tough time.
Don’t waste money on scent killers, most of your scent will come in a way of breathing. Be however mindful of wind direction. Same for clothing, wear what is comfy, warm and dry especially boots.
Be prepared to harvest the animal and I mean BE prepared. It is not a small task dealing with shot moose. Atvs, vehicles of all kind will be of great help.
I’d choose days that are cooler and walk around your hunting area well before the season to figure out the moose movement.
Oh! And when field dressing/gutting etc. watch out for other predators.
Have fun and good luck