I picked one-handed because I preferred having a shield to keep me alive, especially with Spellbreaker as it had a built-in ward. Survivability was a key factor which is the same reason I picked heavy armor over light (once you have the Weight Reduction perk there's little difference between the two, anyway; also heavy armor looks awesome. I did use a bow occasionally but I didn't bother putting any points into Archery. The Flame and Storm Atronachs are pretty effective at bringing down ranged enemies on their own. Hmm, Thief would allow you to level faster, at least until you get the Lover. Just work on grinding your Illusion whenever you can and you should be okay. You may want to work on Restoration too as the self-healing will make your life a lot easier.