I'm not saying it's impossible, but right now Cal would be favored, even in Provo. And you're 14-point dogs to Arizona.
I've posted this before, but your chances of 4-8 and 5-7 are significantly higher than your chances of 7-5, IMO (and S&P and FPI agree).
I can't see any way you lose to McNeese (even a good FCS team shouldn't be a problem for BYU, no matter the coaching), Hawaii or NMSU. But NIU and USU are both returning a lot of starters, and UMASS is a 3000 mile road trip (if that game were in Provo I'd give you a 99% chance of winning).
Again, I've posted this before, but I'd say these are your odds of each record:
7-5: 15%
6-6: 40%
5-7: 30%
4-8: 10%
3-9: 4%
Anything else: less than 1%