I wouldn't consider that to be a huge barrier, necessarily.
The best way to learn a language, and overcome language barriers, is just to move there. Not to wait until you've got the language. Because, honestly? - If you're not speaking it every day, maintaining reasonable fluency is very difficult. You can't get to that sort of skill just putting in a couple of hours here and there in a piecemeal fashion. Even with the best of intentions, how many hours a day do you speak your new language?
The same factors that work against you in your own country work for you in another's though: It's not that hard to learn a new one if your old one is not particularly dominant in your life. When you, by necessity, go from practising a few hours a week to 12-15 hours every day; while being exposed to excellent speakers of the language, while being heavily incentivised to advance (because, hey, if you don't you'll be lonely and vulnerable) ; you get better at what you're doing very quickly.
So, I wouldn't be too bothered about getting the language particularly nailed down before moving somewhere - provided, of course, you don't immediately need to be working or something. If you do, then hiring a tutor and drilling the basics of the language in first is a good idea - you can get vastly superior results that way than by taking classes with others (who may not be as serious about it as you.)
I wouldn't consider that to be a huge barrier, necessarily.
The best way to learn a language, and overcome language barriers, is just to move there. Not to wait until you've got the language. Because, honestly? - If you're not speaking it every day, maintaining reasonable fluency is very difficult. You can't get to that sort of skill just putting in a couple of hours here and there in a piecemeal fashion. Even with the best of intentions, how many hours a day do you speak your new language?
The same factors that work against you in your own country work for you in another's though: It's not that hard to learn a new one if your old one is not particularly dominant in your life. When you, by necessity, go from practising a few hours a week to 12-15 hours every day; while being exposed to excellent speakers of the language, while being heavily incentivised to advance (because, hey, if you don't you'll be lonely and vulnerable) ; you get better at what you're doing very quickly.
So, I wouldn't be too bothered about getting the language particularly nailed down before moving somewhere - provided, of course, you don't immediately need to be working or something. If you do, then hiring a tutor and drilling the basics of the language in first is a good idea - you can get vastly superior results that way than by taking classes with others (who may not be as serious about it as you.)