In a Monk 20 / DC 10, you can also pick up +2 SR for 32 SR, which is really wall you need—there are very few Casters—especially Mobs—that are going to be about 32.
As well, you can either pick up Weapon Specialization as a Feat, or, get the Monk Belt or Ring, which grants that AND Improved Critical.
Plus...DC 10 gives 5 rounds min of Divine Wrath (...attack, saves, and damage modifier changes to +5. )
M 20 / DC 10 all the way!!!
