Well I asked ai and it said that it's fine to post the same vids to two channels, there's no rule against it, so there's nothing to stop me from just dual posting and seeing how each channel does. I will be really sad if I need to abandon symphonious7, I'm attached to the name and attached to the history, but I can't keep getting 10 views per video on these songs, they take way too much effort so whatever I gotta do I'll do it.
Im sure you can make a new channel with the same name now. I thought maybe it would cause duplicate content issues.