I'm going to say strikethru.
IIRC, you aren't a raider - which means most of the time you'll probably be less picky about where you attack from. strikethrough makes a noticeable difference - with 2% not big at all - but it's still more than the other two augs, plus it's kinda cool to see it go off and to be able to go "hey, my new aug just let me get an extra hit for 189 damage!"
the CE definitely won't be noticeable - 2 ce is like .005 of a proc a minute mainhand extra, quite literally. the accuracy will be pretty negligible too. both these stats are great top build up nice and high, but a couple extra damage a minute extra is pretty negligble (ok - if your primary and secondary have 1 150 dd each - 1.125 damage a minute)