Are you sure that for get your ideal job you only need to improve your english? Because I think that maybe you need other skills and probably you can achive them working a couple of years more. I think that if you take the second choice and you try to study english during that time, you will be highly preared to get that job :). And remember, as much as we want to change somethings in our lifes, things allways take their time so be patient, and try your best ;)