E/N & W/MO

ok recenlty i changed my ascended chars sec class to necro and i want to focus on death magic. 1. Is Necro A Good Sec? 2.What skills wood be best? i maily use consume corpse,putrid explosion, well of suffering and nerotic transversal (which never works so i'll probaly change to sumthing else) also i have a w/mo but i dont really wanna do healing i wanna do smithing. so basically i can have the best defense with some good backup offense is this a good idea?