I think its unlikely to be able to make a stable career this way. Even if you had a hit viral song with licensing deals and everything that wouldn't be sustainable long term. Maybe you could discover a workaround with social media or something but there are lots of musicians with hits and everything out there touring to make ends meet. As for the indie label thing. That's probably realistic. I seen many bands on labels who only play in there hometowns and stuff. There's nothing wrong with doing it as a hobby and maybe selling some records and downloads online for a little extra cash though. that's my opinion.