For any journey far from towns, always come prepared, what's to be prepared you ask ?
Food: human body can't function properly without 3 meals a day, for hard physical activities, double that amount. Now you take this number and double it because you want to be sure and careful about your journey. 3x2x2 = 12, bring 12 foodstuffs with you. Now you want food for the return trip as well unless you manage to hunt some games on your way back or robbed foods from the greenskin but since the return trip is basically just a road trip, no fighting, you need 6. 12 + 6 = 18. But hey, one cannot be too careful, bring extra 3 for 1 perhaps unaccounted for day in the wild, 18 + 3 = 21.
Medicine: Prepare as above, med for sickness, for healing and for stuffs.
Tools:Woodlogs, buy it cheap and in bunk from merchant or the bar because you don't want to make a stop in the middle of nowhere and chop trees in the wild, conserve your force for the fighting ahead. You need it both for cooking and for traps, 5 is enough, 8-15 if you're careful. It's cheap, just buy alot, you can dumb them whenever you want.
Rocks: seriously, you need it for stealth and traps, just gather alot of them, dumb them when you don't need them.
Have fun trekking the mountainrange. Do this until you're acquainted with the areas and know them like the back of your hand, then you can safely go anywhere luggage free. Until then, always come prepared.