I don't know how you post a link to a thread in here, but there's a thread in the British forum with people discussing how to match him over the next year.
I would like him to fight any 2 ranked British guys and win the British title outright. (Allen and Price would be good for Dubois' profile, but bad for their careers so they would need to be well paid).
Then either Lucas Browne or Alex Lepai for the commonwealth. Lepai will give him rounds. Browne still has a punch and a name.
Could easily go through those quickish. He's young, and learning, and should be out often.
I would then target whoever holds the European belt. Then take it from there.