I don't have a lot of answers but will tell you some experiences I've had/am having form Trileptal and Depakote.
I take Depakote but am planning on asking my doctor if I can stop it. It's part of what's making me tired. I found that when I took 500mg at night I had dreams all night. I had that on Trileptal too (which I've been offf of for a while) and it turned out that my electrolyte levels were off. This happened after being on it a while. They got to where if they were low because of Trileptal's side effect , I would have a seizure but if I lowered Trileptal, I had seizures. So it's something you might want to watch out for. When I switched to taking 250mg of Depakote twice a day I slept better but had headaches. It didn't help much anyway, although it may have if I'd had been willing to put up with side effects. Some people would have, depending on personality and type of seizures they have. Even on the 250 I take now, I feel my legs 'jumping' against each other like they did on Trileptal.
I can't help you as far as the side effect of aggression. I don't know. Maybe you should talk to the neurologist yourself, would it help if you did, to find answers. Does he have Bi-Polar also?