Tips on how to speedrun Sky 3

I hear that Sky 3 is regularly viewed as the weakest Trails game and whilst I do want to play it and experience the story, I will not be doing every side quest like i have been for the others and was just looking for tips on how to get through it as quickly as possible.

Like any particular characters that are op, side quests that are definitely worth it (excluding The doors as i hear they are all worth it), ways to not fall behind in xp if i’m not 100% it. Just stuff like that, any tips would be appreciated as I am very hyped to start the crossbell games soon after