I could see bizun losses at EWU and maybe versus Cal Poly. NDSU would've beaten NAU by 3 scores, beaten Montana by 2+ scores, and (based on what I've seen/heard about them thus far) would probably beat the cats by 2 scores.
Edit: All that being said, anything can happen on gameday, they could go anywhere from 2-3 in that stretch (unlikey) to 5-0 (plausible).