When you say "witch" that means witches can only be females. Are you planning on renaming that so male characters can also be magicians?
Also what role does the "witch" play. DPS or more like a support? Or maybe both?
Witch it's a warlock, u know "the witcher" so the term witch probably is for both, male and female, and if you look the races, they already have a mage class :3