[Too Darkpark]

i'm actually starting a pure mage myself but i've played the game long enough to realize the value of alchemy. not only can alchemy earn you a few bucks, but it will allow you to create some potent and often needed potions. since your mana/magicka is critical to casting spells making potions that restore it are your friends.
also, since your most important statistic is intelligence than you might as well practice alchemy too.