Behemoths first floor for Wizardsi recommend your wiz to be atleast lvl115 if you want auto at behemoth. but it still depends on your attributes will you be able to autohunt them or not.
I tested it today with my wizard and it didnt use even one fluid for whole stamina. my attributes are: atk 107, def 79, hp ~170, mana ~120.
Skills I used were rupture atk and renew, weapon Bone caster, spell psych blast.
Important: healing spell must be refresh so you char can use it often .
exp gain is ~75k per hour.
Edit: weaker wizards should disable atk spell so they can heal all the time.
disclaimer: behemoths are still strong monsters and dangerous for wizards, especially if you have laggy connection. I am not responsible for possible deaths of your chars. Use this waypoints at your own risk