Alchemy,
No your age wouldn't be a problem whatsoever. Given where you are professionally, EK represents a significant step up and a great opportunity to get some good international exposure. Given your age, you really have very little to lose by coming over for a few years and getting to the left seat of a 330 or 777. That's pretty much impossible in the US given the state of the industry there now. Once you do that it should be pretty easy to move on if you decide that EK isn't for you.