thank you all for the answers
who should I take the leadership and blacksmithing with btw? (party of 1 mage, 1 melee rogue, jahan and cain (madera))
also combination of 2 mages (heavy pyro/2 orso geo/2 hydro/2 witchraft) + Jahan (heavy hydro/heavy air/1-2 pyro/2 witchraft) or something like that?