That makes total sense, actually. And yeah, I totally get how much of a pain it is to rewrite the same thing again and again.
Since you mentioned potentially doing the 4-chapter demo first, I'd love to offer translating those 4 chapters into PT-BR for free as a pilot project for the game! I'm a game localizer specializing in EN ➔ PT-BR narrative titles, and I'm currently expanding my portfolio here on Itch.io (as you can see on my profile).
Zero strings attached and no extra workload for you—I can handle the Ren'Py string integration directly so it's plug-and-play on your end. It would be a great way to test how the Brazilian community responds to the game. If you like the quality, we can always talk about handling future chapters as the script locks down!
Let me know if that sounds like something you'd be open to, and you may contact me via Discord or Email!