GT and et.al: Just a spectator's opinion, but if you are on the fence about the days away, you may find yourself miserable. It is something that must suit you and your family (I held off in 2010 because we had cancer hit our family, which was beaten.).
Before you make a decision, I would try to talk to a few Giant crews. I have found them very helpful and frank. I continue to be amazed with the people I've met.
From my seat I have seen first hand who has been selected for the interviews, all very very talented aviators. I have used this time to prepare and sharpen my game.
I wish you luck. There is a great deal of information available to help you.