If you have a high Int and alchemy scores, you could probably make a restore magicka potion. I don't know what ingredients that would take...

Potions can be very profitable. I am still near Seyda Neen trying to clear out the caves and tombs, and I often take all the Luminous russoula and Violet corpinius I can find. I then make a poison potion, worth 22-45 gold, depending on what equipment you are using. Alchemy equipment is kind of heavy, though. And you fail at making potions very often, even with a high alchemy skill. Many potions are useful though. I saved my life by making a "restore health" potion, and fighting any hand-to-hand enemies is a lot easier with a "restore fatigue" potion.

Since you favor light armor, I'd suggest the best combination early on in the game would be= (Glass: tower shield, bracers, helm, padrons, and breeches) Then the boots of the apostle (found below stronghold Berandus) then the cuirass of the saviors hide (found in Tel Fyr SW of Sadrith Mora). You may have trouble getting the saviors hide (it's in a lock level 100 closet at the top of the tower of Tel Fyr) so you can use the skeleton key to open it with. The skeleton key is found on Gentlemen Jim Stacy leader of the thieves guild in Jabasha's Rare books in Vivec. If you decide to kill him for it, I'd suggest waiting to join the thieves guild until after you do so.