Welcome to our forum.
You've certainly done your homework in the music area and will probably go far! Persistence and hard work (in a labor of love) will yield more opportunities in due time. Sounds like you've got a pretty full plate at the moment.
I think a lot of the secret to poly and open relationships is time and experience. I don't know that jealousy ever "disappears," but I think it shrinks and becomes a lot more manageable over the years.
So what sort of roleplaying are you into? The word has such a wide range of definitions ...
Sounds like you have a good start on a bright future. Glad you could join us.