After seeing Fritz Lang's Metropolis at the age of 12, I was completely blown away. That was when I decided to be a filmmaker. However, I rediscovered my love of filmmaking last year.:)
I would do seperate channels. Personally, I don't mind bilingual content as viewer because I know that there are many different audiences out there besides the English market. But good luck.:)
Welcome to IndieTalk. Recently, I just became an youtuber myself. But mostly, I do gameplay videos for casual games. However, I am working on doing my own machinima series on there.