Witch NPC class on a player character

Obviously it's not a hyperoptimized custom class, but how does it do in actual play if I don't plan to look up fortify intelligence recipes on the internet to start the exploiting early?

Edit: It's a bit late to add this in, but the stats, very likely to be slightly changed by a mod I didn't think about are:

Specialization: Magic; Attributes: Luck, Willpower; Major Skills: Mysticism, Illusion, Conjuration, Unarmored, Short Blade; Minor Skills: Light Armor, Alteration, Sneak, Alchemy, Speechcraft