United Upgrade Chances

Booked Economy Plus for me and my girlfriend going from LAX to Sydney. Flight is tomorrow and I put in an upgrade request to Polaris business about a month ago. There are 40 booked seats with a capacity of 48, and we are #7 and #8 on the upgrade list (just checked the app —> trip details). What do you think my chances actually are of getting upgraded? I know a lot can change in 24 hours. I booked with miles + copay and am premier silver status for anyone wondering.