Hello,Dear. I have read your proposal in detail and understand what you want.
I have developed already IPTV system (admin panel, player app)that consists of 15 servers using Xtream code and I am managing the VPSs, Apps.
I have implemented the system comfortable with mag, enigma and several devices.
Of course, I have good experience in ffmeg and HLS.
So I can help you will satisfy your requirements well.
If you want, I can start your project right away.
Best regards.