How will he seek this secret? Will he be doing Original Research, secluded in his lab? Then you won't really need his Art scores, unless roleplaying or gaming-group says otherwise; second-magnitude effects are best. You would, however, really need to pump Magic Theory up, so you may want to pick up Affinity in it. You may also want to increase Concentration, to avoid Twilight.
I'd suggest however being a Seeker and attempting to integrate Ancient/Hedge magic, in which case you'd want the Seeker Flaw; or to be initiated into a Mystery Cult (e.g. alchemists). In terms of story potential, being a Seeker/initiate just has so much more to offer!
That's it for now.
Yair