Music "theory" is really "a history of what others have done," it's not a rule book in any meaningful way, just a way of sharing ideas and talking about things. Western music theory is hideously complex and overthought anyway...plus it omits vast swathes of interesting ideas and approaches.
Plus, everyone breaks what rules there might be anyway. Like parallel fifths. Go on try them. The world won't end and unless you're charting parts no one will know anyway.
The question is: what drives your curiosity? Do what compels you, do it with others in order to learn, share and be part of a small non-famous community. Most of all have fun! be fun to be around, don't be afraid to pitch in and expect to be the one who picks up the phone to make the calls. If you want it to happen, you have to provide the spark and the vision. Others will happily join in.
Also, to your second question, do not come to America unless you have a damn good reason. We are becoming increasingly irrelevant on the world stage and things are beginning to fall apart in some seriously bad ways. If you want to participate in a vibrant society that's not going to experience a civil war in the next 15 or 20 years, I'll recommend China or Russia. The West is a drunken bag lady vomiting on herself at the bus stop.
