What we have is a kid looking for an amp who plays so hard he breaks strings.
If he wants to play gigs, an amp is the least of his worries. He will need to:
a) learn to control himself when playing. because playing hard enough to constantly break strings sounds - obviously - hideous. And the best amp in the world won't take the pain away of listening to that.
😎 hire himself a guitar tech who can change all these broken strings during his gig
c) invest in about 5 backup guitars, because by the sound of things, this is a chronic problem.