Looking more as a group-team than individial
If the team is cleaning up at A, then that's a good reason to look towards AA.
Historically, minor year teams moving to Bantam struggle with the physicality. Size of the team does matter, but most likely an average size minor year Bantam team is going to end up in Flight2.
The AA Flight system is a joke, but if the main objective is competition, it's probably better to play in Flight2 than to play in Bantam A and win 90% of all the games by 5+ goals. Again this presupposes that you have a team that has just outgrown PWA and/or should have been playing AA all year. Usually that is obvious at this point of the season, and can be proven in end of year tournament play.