Excellent way to bring them together.
Now some unsolicited advice. I would mark this story as complete because it ends one journey. Book 2, when you can get to it, will be another journey the four boys take together. I’m including Danny and Naiche if it wasn’t obvious.
This accomplishes at least two things. Your readers who are so inclined can provide reviews, all 5 star I would venture to guess. Secondly, it breaks you free from the pressures of completing a story. Starting a new one is always a rush for me. I’ve done a few “book 2s,” ( not to mention a 3, 4, and 5). It being ”new” can provide a breath of fresh air, so to speak, and make its writing easier.
Ignore my rudeness or overstepping if you desire, I won’t be hurt.