Sub WHM, for the love of god do so. Else your pretty messed up.

Try doing the low lvl avatar fights if you want, but Fenrir will never be yours if you dont have a lvl 70ish job to fight him. Fenrir is a luxery show off avatar, so unless you get a job that high, no Fenrir for j00!.

Also your going to be healing most of the time at low lvls when you have limited abilities with avatars, later on you are teh buffer. Then at lvl 70, big time dmger.