You shouldnt make bi-elemental characters anymore. They dont fare to well. Pick one skill, stick to it and max out all skills that benefit that. As for stat pts. Get about 95 str, enough dex to wear your gear, base mana or close to, and the rest should have one into vitality. My sorcy is a pure blizz. 5000 dmg blizzard, and 1035 health. The damage is not taking into account cold mastery.