Enchanting, the Aspect of Terror under the illusion tree. If you are going 1-handed, take the bound weapons perk, Mystic Binding under the conjuration tree. It gives 50% more damage to bound weapons, considering the bound weapons are daedric weapons. It will save you from having to take armsman perks.
Also take conjuration for all the helpers you can get. They really come in handy in most any fight.
I also go with sneak, and take the Deadly Aim perk, which gives bows 3x the damage, plus any damage done while sneaking and undetected is boosted, which also raises whatever element you are using at that time faster.
You should also take the Quiet Casting perk under illusion if you decide to sneak. Once you get a couple of helpers, then leave your companion at home. When sneaking, they just get in the way.
I only take 5 perks under restoration, which are novice, apprentice, recovery 2, and adept.
If you take both fire and shock, also take Augmented flames 2 and Augmented shock 2. You can also put poison on your bound weapons.
I do not do alteration, and do not like it, but to each their own. I use the boots that give protection against fire, frost and shock. The higher level you are, the higher protection on the boots.
I also do a 3 to magicka / 1 to stamina. I do not put any points into health. Do not need to. Stamina also helps with how much you can carry.