Heya,
I love the idea of using the SEGA system, there's something magical about that arcade feel. I'm an experienced composer/sound designer, but I haven't used DefleMask or Furnace. I learn pretty quickly and would be willing to master DefleMask for this project. However, I'm currently looking for paid projects. If this sounds like something that might work for you, send me a message on discord @lukamajor
Cheers :)