Thanks for your input !
This project is on hold for obvious reasons, being alone on a project like that, this complex is very time consuming, and my work is killing my time. That is a project I plan to completly take from the beggining, that's why the demo was pushed like that, I didn't wanted to waste the time spent for nothing, so at least it's testable and working and a good test for me to learn !
Sorry for the mistakes, When I'll have some time, I'll check if I can at least modify that for others !