I don't think you will have any problems, from what you wrote, I would say you are fine. But if its keeping you up at night thinking about it, then go take a course of study in english, three to six months will do. If that much. The best way to improve in a language, is to speak it with somebody that speaks it. I'm learning russian myself, for no other reason than because I want to. Books tapes dvd's and the rest is all well and fine, but having a girl friend that is a native russian speaker, is making it some what easier. The Greek alphabet is giving me headaches at this time.