[Malicomatt]

Hello,
I'm currently a college student in America. I will get my Bachelors in Linguistics soon with a certificate in TESL. I spent about a year in Japan learning the language (Japanese is my focus language for Linguistics) and I can speak somewhere in between the JLPT level 2 and 3 with my kanji at about level 2. My question is, how much more money do you think I can make in the long run if I got my Masters in TESL? I want to pretty much live in Japan for the rest of my life because of the awesome experience I had when I went to that immersion school for a year. My final goal is to become an interpreter in Japan, but if that didn't work out, I could just teach English and I would be happy in that. Does anyone know the answer to this, or know how I could find out?
Thanks