If he gets in touch with healing the way he wanted as a boy, it would be as an arcanist (physick), but honestly it'd probably be different. Not so much capable of stirring the recipient's aether but, able to pluck and manipulate another's aether (esp corrupt or overabundant). Gotta think on it more.
*whispers* drk/fray selfcest...?
I think the end goal is pretty simple for him (esp since I don't exactly go by the jobs fully), but it'd be something like:
WAR currently, most familiar through training.
RPR recently, instinctual through voidsent.
DRK in future, devotes himself to learning.
PUG/ROG/ARC for basic survival skills.