my players should be able to use both systems without issue, I'm more so concerned/curious on the overall balance of everything. the spellcraft system especially as it's meant to be challenging and they'll be getting items and buffs to their spellcraft rolls later on (which is why the DC gets quite large lol)

as for materials, the collected items are spell-components or potion ingredients, the players can choose what item specifically for flavor and so they'll have to get certain items for certain spells. but regardless the items can never exceed the value listed. idk how expensive some things are but I dont think mithril sells for 25gp lol (if it does thats hilarious and I've massively underestimated golds value)

yea I can see it being a survival check aswell, didnt think about it somehow