Hell yeah! His canon point is from a few years before Rogue One so he's not quite the romantic hero that he is in Rogue One yet. But the parts that will eventually form into that are there. He's still stuck in the "I'm not dying for you idiots I'm looking out for me" era but the change is comin'. His mom says some stuff to him in the finale that kind of turns his survival instinct on its head lol.

He is. A total. Mama's boy it's incredible.

Anyway yes he can probably get the headphones to work again. It might take him a minute bc the power source is going to be really different from what he's used to, but they have speakers in Star Wars and I figure that part can't be so different. And he will appreciate another quiet loyal type, if nothing else it's nice to be around somebody who isn't constantly talking and/or expecting you to talk as well.