Couple of small items you might need for your build (and a couple of my "on the cheap" comments):
front and rear brake cable stops (they dont come with the frame or cantis) I have a front one if you are interested.
downtube cable stops (put a wtb on craigs or go to the shops..they usually have them laying in a drawer from their STI installs/builds)
cables/housing (probikekit sells stuff by the meter..free shipping)
bar tape?
tektro oryx or cr720 cantis (maybe pick up some kool stop salmon pads..i might have the cartridge types if you go with these cantis)
spacers for your threadless stem
headset