Things are gonna get interesting. I'm sure my PCs can handle some of the more reasonable stuff (Hell, the main encounter this week will be a slew of minions) but the ideas I have for the first villain and the town guard who'll basically be, "Hey, stop fucking with the town's laws!" are gonna be total asskickers if they decide to fight them.
No, they won't be fighting the elite guard or necromancer.... unless they're stupid enough to.