You will get better DPS from timing, but only with proper timing. I always got better DPS spamming (well not 100% of the time) to. I have yet to figure out a really good way to figure out your timing once you are in a raid setting, likely with another haste buff you aren't used to having.
Haven't started raiding 80 stuff yet, so can't give you anything definate for 'new' AA specs. I'm guessing wis/int/agi. And then of course on the monk side, if you are speccing for DPS, you can pretty much get everything on that side that increases DPS, hit chance, and CA timers with the extra 20 AA.