I can't really offer much advice in the details of the field you have mentioned. But what I can say is that if it's something you really want to do, pay should not be too much of a worry, since I believe if you really want to do it, you'll enjoy it, and the pay will come naturally. What I mean by that is get into what you think may be your field, and if you really like it you can eventually make a lot of money doing it.
