40lbs would help a lot. Ashley's ore samples are only 12lbs.
I assume the dwarf will be a gentleman and also carry at least a minimum. We should be good. I'll publish an updated inventory until tomorrow
[Please officially restate all the improvements you gain by leveling to 5 here, Cat, I would like you to choose an alternate feat that you can use immediately, you will be allowed to swap them later if you choose, include all changes from your leveling, HP gain, proficiency gain, etc. I will incorporate only these changes so don't forget anything.]
Oh wait, should we roll dice for HP gains? Did we ever do that during previous levels? I think we did for 1->2 but surely not when we leveled up 3->4.
As Barbarian, Cat will gain an extra attack and fast movement. Just like Alice she has 2 attacks and 40ft movement now.
Carpenter's Tools (8 GP)
Ability: Strength
Weight 5 lb.
Utilize: Seal or pry open a door or container (DC 20)
Craft: Club, Greatclub, Quarterstaff, Barrel, Chest, Ladder, Pole, Portable Ram, Torch
Like her Smith's tools proficiency, it's useless for now because Cat doesn't have the tools.
If you really dislike Polearm Master and don't let Cat trip over a polearm weapon she finds in the mine, she'll take Tough for now. This will give her +10 HP and +2 HP every time she levels up. A bit boring though.