I like Night Owl's idea that we spread out the damage among our players. However, we need to do it gradually. I suggest that we choose a few people per day based on who we all find the most suspicious. If we spread out the damage too much and bring too many people close to dying, we could be in just as much trouble at endgame as we would be if the scum had no damage at all. (They could deal one hit and kill a Townie...)
That being said... I don't really know who to attack. XD Based on solely what I said above and the attack percentages, I'd probably target David, but I hesitate to do that because he'd be helpful later in the game if he's Town. On the other hand, I have no way of telling what anyone else's defense is like except for basing it on my own, and I have no idea if mine is really high or really low or somewhere in between...
Also, just as clarification: are we always going to deal the same amount of damage? Is that what the attack parameter is for? (I'm really sorry; I know this has been explained a thousand times, but I just want to make sure I really understand this system.) If so, we definitely should keep a list of everyone's attack levels for future reference.