Well, Westmont looks as though it has an open date Week 3, so Williamsville could play them.
That said, Westmont High's football program has won 8 total games in the past 5 years while Williamsville has been a playoff team in 18 of the past 19 seasons, including the last 15. (6-0 during Covid season with no postseason not included).
So, for the away team in a Westmont/Williamsville matchup, there is a almost 5-hour bus ride one way, followed by what is pretty much guaranteed to be a running-clock game, followed by another almost 5-hour bus ride to get home.
The hunch here is that with the Rochester/Loyola game as comparison and with the poster wanting Williamsville to be the "Rochester" in this situation by playing up in class, this is not the matchup you are looking for.