I'm sorry you're going through that. It might be worth going up to 200mg. Lamictal is one med that definitely messes with my emotions and makes me agitated when switching dose around, though that's temporary, of course. Does the Geodon help enough to make it worth it for sure? I could absolutely be wrong, but 3 mood stabilizer sounds like a lot to me. Also, I've heard people say fish oil/omega 3s are really helpful natural mood stabilizers, though I've never tried it consistently.
Good luck!