Personally, I wouldn't make him anywhere near this powerful as he's more of a "lite evil" as opposed to truly evil. And the Potter magic is welll.... lacking....
That aside, I'd say that drop the wand magic bit, but add "Item Of Power (Wand) and add Evocation to it, along with any other "quick" magical effect.
Stuff like mind sight is workable better as an evocation, IMO. As is the flight. Or maybe just "Wings". I'd also use the phylactery (ooops.... I mean horcrux) idea from the Lich that sanctophrax has posted in the "Generic NPCs" section.
And maybe give him "Incite Emotion (fear)" as an ability