Losing the weight was hard! I just quit eating junk, only healthy food (forget ridiculous low-carb diets), smaller portions and lots of aerobic excercise. Once I got it off, it has stayed off, of course, I still follow that lifestyle, but I cheat 1-2 times a week.
I take Trileptal, Seroquel, 200 mg Lamictal (optimum for antidepressant effect) and Welbutrin.
If you can avoid it, don't take lithium. Its side effects are unpleasant and it isn't designed to be taken forever.
Geodon, not usually the most effective stabilizer out there, but works well for some people. It sure didn't touch my mania, even on the highest dose.
You are extremely lucky to be able to afford quality care, talk to your pdoc about trying something else, if it works, you will wonder why you didn't sooner!
Best wishes to you, too! Stay well.