How I would do it and actually done quite often in the novels that I read. Sounds like an interesting book and you have a well thought out plan.
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The correct POV for a story, in my opinion, is the one that best serves the story.
So it sounds like you're making a solid choice for yours!
I've noticed I have a preference for third person limited, and I think the reason for this is that it allows me to tell a story without feeling like I'm pretending to "know" my characters well enough to write from their perspective. Rather, I write their stories from the perspective of the character I know the best, and do so with as much empathy as possible, without "being" that character.
Which kind of makes sense since I have a tendency to write about real people but perhaps I should try an exercise where I write in first person just to see if it really does feel too much like my own voice.
Sorry, that's was a bit of an aside. I wish you the best in your story!
I asked for opinions and tangents. Thanks for yours! I appreciated hearing and learning from it! <3