Personal opinion, as someone who's only empath is only level 33:
Double up your spell aiming, so 1110 and 111 can be used (easier).
Mental mana control, for better mana regen, more uses of mana spellup, mana pulse, etc.
More harness power, for more mana in general.
More perception for better bandits and defensive purposes.
Mental lores (as stated above, telepathy & manipulation), for better offensive spells.
Given your current spell-spread, you can't train any more in spells, but you could move some around. I wouldn't suggest it, unless you plan on bolting more, and CS-casting less, though. I'm pretty sure the 166/67/67 spread is the normal for best CS in the circle of casting choice.
Again, though, this is coming from someone who's highest caster in general is 33. I probably don't know all that much, given that.
~Crazy Cat Lady, Player of Cylnthia~