On your wizzy, keep pumping knowledge arcana. Not having to ever learn the identify spell is niiiiiice
Alchemy skill is nice too, especially in certain areas
Cleave is nice (come on, it's a free attack people [img]tongue.gif[/img] ), Great Cleave is optional (only good for bulldozing through hordes of baddies you kill in one hit. Unless it happens to be a prerequisite for something, but I doubt that.)