You are right, Mert82.
The most acceptabel minimal stats for Fire Fighter is:
Fire Fighter (lv 51): STR 85, CON 53 INT 0, WIS 11, AGI 4
The strongest fighter, add more into STR after lv65 to be a real Killer.

But WIS 55 is not waste of points for quest-type char, I guarantuee you.
Even Fire Fighter need a good resistance against magic and assistant skills, otherwise you would be too easy kill for mages or being in trapped.
And INT 1 is just an extra, to have Fire Attack for fun. It can remain INT 0, no problem.