I have 11,000 on my 2007 and I'm thinking about changing it too. For the length of ride you're talking about, I would change it. I would change it now, just to make sure I did it right. This will give you time to test close to home and piece of mind while on your trip.
The last thing you want to be thinking about for 2,000 miles is "wonder if my stator will fail?" Even if it doesn't it will weigh on your mind. My vote would be to change it. Ricks seems to be the consensus aftermarket.
http://ricksmotorsportelectrics.com/aftermarket-stators