Hi, let's discuss it via chat.
I have use various kind of microcontroller for various kind of project in last 8 years.
I have experience using atmega and STM32 for military purpose, Robotics, and IoT.
I think It would faster the development if its using Arduino software, I mean, we just using Arduino as platform for firmware development. and download it's hex file directly to atmega using ISP. I could do that if you chose to work together with me for this project.
just chat me, and let's work together to bring this idea to reality.
best regards,
Rijal