My advice would be to do your sums, I went abroad and by the time I had paid for training, accomodation, food, etc, it was 6 and 2 3's between doing it abroad and in the UK. I was told 3 weeks if everything is going for you, but 4 at the most. No try 6, and even then I had to do my skills test in the UK. Weather was a constant problem, you could set your watch by the thunderstorms, this usually knocked out any chance of training between 1.30 to about 4ish every day.... I didnt even get off the ground for the first 6 days!
If you do go abroad, it is good advice to try and get the written exams out the way as soon as possible.