Preparing for NaNo 2010

I need help. NaNoWriMo 2010 is right around the corner and I need help deciding what I'm going to write.

I know I haven't posted on this blog much (and yes ddo going free to play is part of the reason and yes I'm afraid/excited about Lord of the Rings Online goes F2P--who doesn't want to go running around the shire, or the mines of Moria, or Helmsdeep, or Minas Tirith, or...) but I have been working on the writing...some. I've even received my proof copy of The Ascent from NaNo '09 which I'll post picture of here in a bit.

But back to my problem. After writing two 100K+ novels and not having any time to edit them, I thought I'd write a YA novel in the 50-65K range. (I'm trying to buy time here.) I've got three rough ideas to choose between and I'm putting it up for a vote. (I realize most of the replies will be on facebook, but you can also reply on this blog.) I'm working on more detailed synopses, but until then, these are the thumbnail sketches:

Story#1 Good girl must do bad things to rescue family after zombie apocalypse.

Story#2 Boy must take over his eccentric family's vocation guarding one of the seven Hell-gates to save cursed girlfriend.

Story#3 Rejected apprentice discovers plot to infiltrate mages' guild and develops knew form of combat to stop half-dragon shapeshifters.

I refer to #1 as The Breakfast Club meets Dawn of the Dead. It would probably be the easiest to write.

#2 I sometimes refer to as the Adams Family story. Much more character driven and harder to get right but could be very fun. It was originally intended to be a horror romance (horror more like Poe and Lovecraft than modern slashers and romance more like P.G. Wodehouse than common bodice rippers.)

#3 is a pretty straight-forward fantasy story. The thumbnail synopsis doesn't really do it justice since a lot of it involves the main characters trying to track down a mysterious group assassinating mages. This one would probably require more work to plot out than the others.

So which is it--or do you have a better idea? I'm open to suggestions, but I've got to decide in the next four weeks and start marking out scenes as soon as possible.