At 22 years of age, you've got nothing to lose and potentially more to gain. Come over, give it a year or two and if you don't like it, do what what Dookie had the balls to do.....leave.
Make sure you get assurances in writing such as accommodation, fleet type, etc. Yes they have the contract to amend but all good ammunition if you decide they renegade on promises and you still have some bond left to pay off.
Harry