Darklone said:That screams for skirmisher: Go Swift Hunter with scout3/rangerX and pick as your main favored enemy undead. At level 11 given you have Improved Skirmish and Greater Manyshot, you'll do 6+5d6 points of extra damage with each of your three fired arrows per standard action while enjoying a high AC and moving away from the bad bad undead.
3d8+18+15d6+ 3*(str mod+bow enhancement) with a standard action sounds good to me. And don't worry too much about hitting, I can hardly remember the last time our Swift hunter missed something.
IIRC, skirmish damage being "precision damage" doesn't affect undead. Thus the OP's comment about how the likely prevalence of undead makes that sort of build much less attractive.