What other enchantment should I add to my items? I use every school of magic except for Restoration. I really like conjuration and illusion out of most. What about the whole Magicka regen thing?
I'm only level 44 right now, and currently have 5 perks saved up. I don't know if I should either put one in conjuration mastery or illusion mastery or both and get the whole magicka Regen thing..

Magicka regen svcks bawls.

I have another issue.
I use shock magic, and got the perk disintegrate. With disintegrate, they turn into ash every time I use a shock spell against someone, but I like bringing back the dead to help me, but this is an issue now.
How can I bring back the dead when my main source of damage is destruction magic? Should I use frenzy and watch them fight each other if they're worthy enough of the whole reanimation?

Magic reduction is sadly the best thing for magic schools as it makes higher level spell viable.