If you're going to make it for more platforms, let me suggest MSX, Colecovision, NES, GBA, or Atari 5200 😁
Not sure yet... but maybe.. Which platform would be your favorite?
I think this game would be great for Game Boy Advance. But I also think that if you made an MSX version it would be easily ported to SG-1000 and ColecoVision.