Good luck Ice Man! I did the same thing last week on a GP Big Stick. Liek others have said, makse sure you've got your rates on the low side and don't forget to throttle back once you're airborne.
I'd sugest having another pilot look over your plane with you as well just to make sure you haven't missed anything obvious. It's easy to miss something when you've been close to a build.
Oh yeah, don't forget to breathe.