My Dragonborn usually plays a hybrid between thief and warrior, but I am trying to keep the game interesting at my high level by switching more to the mage playstyle.  Most of my level-up points were put into stamina and health, so I have little magicka to work with in comparison.  I COULD restart with a new character from the beginning, but I don't want to do over all the 'Main' quests.  So, using the extra effect enchanting perk, I would like to reduce the magicka cost of two schools at the same time.  For example, helm, necklace, ring, and chest could each be enchanted to reduce the cost of both Destruction and Illusion by 20% for a total of 80% reduction in the cost of magicka in both Illusion and Destruction schools.  So, if I were to create multiple sets of armor (covering every school of magicka), which schools would be most benificial to be combined in the same armor set?  I was originally thinking pairing Destruction with Restoration so that I could deal damage while healing myself.  But then I thought about Ebonyflesh in Alteration and how it would work defending myself either while healing (Restoration) OR in battle (Destruction).  So, I'm asking you guys what you have the best luck with or what you think I would have the best luck with.  Thanks in advance.