Too soon to say. A lot will depend on who Falk feels comfortable with. Which receiver, or receivers, is he going to look for on the field? Every QB has a favorite, and we don't know yet who Falk's will be.
Purely by position, I'd expect Cracraft to end up with the most catches, probably Marks with the most yards (followed closely by Dom), and Cracraft with the TDs.
But big plays could blow the yards and the TDs completely, and we've got enough speed and talent in all the receiver spots that anyone could make those plays (although the outside guys are probably most likely...and Dom with an edge over Marks - as the outside and weak side, odds are he's going to be further downfield and behind the defense for his catches). Considering our stable of receivers, it's entirely likely that someone who's not even on the 2-deep could end up leading in yards at the end of the day.