Hello,
I've read your project, I'm Expert on telegram API, I can make scripts to handle channels and bots, very very easily.
I can make scripts to you can manage your channels on the web.
on the script you can set proxy to send messages.
I know the importance of your project , I can guarantee you will be satisfy on the result.
I'll be happy if I can help you
please don't hesitate to ask your questions.