But how far will he go? There's a lack of newly trained Aurors to catch the bad wizards (nobody got into Auror school for some years right?).. So that reminds me of this, how many wizards do both sides have? How many people are with Voldemort now? I suppose he can't have that many people yet, so if Dumbledore & company strike quickly, they might get him..
(but to fill 2 more books with just that.. it'll probably be a lot more complex! )