I need to fly out in a month from now from EWR to LAX.
I want to purchase a coach and hopefully get upgraded (I am a Platinum Elite). I know the chance of being upgraded is slim to none, but currently flight CO1002 is showing only one seat taken in first class. While other flights for that day are about half full already.
So I am wondering if anyone has any experience with that flight, if it usually leaves with empty FC seats, and if yes, what would be that chance of being upgraded if I am traveling on a "U" fare.

Thanks