Hello, Norm.
Got your message. If you're looking for food for thought, consider opening with scientists making a discovery on some planet, finding an artifact that purports to be ages old. The scientists report hearing voices, but those slowly go away. The story fades away, curious more for the delusions that 'god' was talking to the scientists than anything else. Later in the story, reveal that further study shows the artifact is made of technology that is only theoretical at the moment (but possible), and may house- or have housed- an advance form of artificial intelligence. Set things up so the possibility exists the voices the boys are hearing come from this artifact. As the story unfolds, drop nuggets that the artifact is from the distant future and is basically a 'how-to' for the boys to guide their current civilizations into a future free of death and destruction and all that. Leave open the possibility that the boys succeed, and one of their descendants in the future sends the artifact back in time to guide their steps. The AI can be so vast and intelligent it could be considered a 'god' to use mere mortals, and this is shown by how it manipulates those it has targeted. The future is malleable, so its success is not assured, leaving all sorts of uncertainty. And the AI itself has delusions of grandeur, which only make it seem even more god-like.
Give the voices in the boys' heads an alternate explanation as the story unfolds. Sow seeds of doubt through the first two books. Wrap it up as though the AI has mostly succeeded.
Just throwing stuff out, see if any of it sticks. I would consider looking at the YA Christian market, if there is one, as well as YA science-fiction. Using an advanced AI from deep in the future would appeal to the sci-fi segment, and turning the AI into something equivalent to a god that it must have come from God would appeal to the religious segment (just guessing here). The story arcs can essentially remain the same, pretty much- the boys are being guided by an all-knowing, all-seeing hand (until history doesn't quite repeat itself and the AI finds itself treading into uncharted territory but making prescient guesses as to how to proceed). you can play with the relationship between the boys and this god as the story about the artifiact gets out or such.
Again, just musing aloud.
In any case, if another project has your attention, let this one go. Finish your current draft, then box it up and when you're ready, blow the dust off and look at things after some time has passed. You may take the story down a whole different path. No reason not to. I let Maiden sit on a shelf for years before digging back into it. It's a much stronger work now, and I hope to write my way to a rousing finish that sets up more stories in this Brethren Space I've created. So it can be done.
Good luck!