Maybe I missed it but....
Why are you not interested in a US Carrier... any particular reason? Overseas flying IS fun but I do think you'll be branded, rightfully or wrongfully and that's probably not something you'd enjoy having to live with if you someday decide to come work for a US airline.
Good luck in whatever you choose but like life itself, making decisions on certain employers can indeed affect things... fairly or not... in life.
I/m at an overseas carrier and there have been a few European guys go to Norwegian on the 787. From what I've heard back is the pay is pretty low. But these guys have to pay very hefty taxes. I'm not sure how they'll be if you're based in the US. Proly something worth finding out in your quest for info!
Kap