Gossamer's idea works quite well. A character that is ruthless and unremorseful generally fits a teaching stereotype. Based on personality alone I would suggest Ravok for your character, and I would also advise worship of Rhysol, Ssena or Krysus, and perhaps work to join the
Black Sun should you become a Chaon. To that end I would suggest swapping Writing and Mathematics with Cryptography, Interrogation, Disguise, Impersonation, Poison, or Politics.
If you have 0 Pts in Writing/Math that does not mean your character cannot write or count.