Hi there Crozier,
Brain surgery is a serious option no matter where it is. I would always be tempted to try convention medications prior to surgery unless there is a serious risk to life or disablement. I dont know much about it, but as far as I am aware, standard AED's can be used on MTL epilepsy. Carbamazepine, Lamictal, Sodium Valporate etc... Talk it through with an epileptologist if you have access to one, if not a neurologist.
Darren