Actually, niklinna has a great point. If you're going to burn a wish, wish for what you actually want, not an avenue to your goal.
The wish could be a means to create a friendship with a storm spirt or a quickling, perhaps gain an instinctive understanding of the Motion rune, or you could be the first to unlock the secrets of the Wending Way- a paranormal means of negating space. This could be simply abstracted as being able to invoke haste 1/day, although that would be a cut-and-dry answer worthy of Melba. Being a vampire can be cool and all, and if that is the means to your goal that's perfectly fine. And a method to add some interesting drama, but clerics are going to be a pain.