and starting from scratch, and looking for max possible dps,
1st life Rogue, which enables you to select Past Life: Sneak of Shadows (+1 sneak attack damage per 2 character levels) on your 2nd life, as a repulsive squeaking hobbit monk, and then halfling monk again on your 3rd life, at which point you should be able to select both active past life feats, Sneak of Shadows and Disciple of the Fist? Or would you feel a little feat starved from having to use 2 slots for active past life feats and maybe go human on your third life (then having to wait until you could equip tharne's goggles again, or get some backstabbing wraps or w/e, in order for your sneak attack damage to work) just to make sure you had enough feats slots to pick up the goodies (imp crit blud, weapon focus blud)?
I would probably need get in a car accident and lose the use of my legs before I thought it would be a nice use of my time, but what the hey, I'm just thinking out loud here.