I need more time to finish, I made the joystick, the pedals. The throttle need a new base. All that things need to go on my ikea chair and the electronics need wiring and modify the source from the SIMCHAIR. I think I'll have more time during the summer holidays. I just bought a Taranis, because for the FPV part, I'll use OpenTX on Arduino Mega.
I have tested the pedals on a sim, they are really cool.
Feel free for asking, I'll send you photos or references of components I used.