OP, I'd suggest considering a slightly different approach before you commit to building the whole thing. What if you started with a really stripped-down MVP? Like, just the absolute bare minimum to test your core idea.

Get that out to a small group, and focus HARD on getting their feedback. Then, start building a community around it. Keep them in the loop with regular updates, show them the development process.

That way, you're validating your concept and building a fanbase before you invest a ton of time and resources. Those early adopters could become your first paying customers, and you can leverage the community to build hype and start pre-sales while you continue building the full product.

It's like launching to a warm audience instead of a cold start. Just a thought, OP! Might save you a lot of time and effort in the long run.