As I already said, I'm not in a rush, although I think I should be able to at least follow general dialogue and simple conversations in about a years time. Although giving yourself 10 years to be "reasonably profficient" is too much time, if you don't limit yourself to a stricter timescale, you'll cause yourself to go at a much slower pace than you are capable off. I can tell you my methods at the end of those 10 weeks if you're still interested.