Kenny, we worked together once (if you remember?) and I have no doubt in my mind that you can carry this off with no sweat at all. The demons are in your mind, and once you get through that most difficult part, which is walking onto that stage and playing the first verse, you'll settle back and love it. You will come off the stage (if the audience let you off!) and you'll want to get back on and do it again, even if it means playing the same three songs!
Performing to an appriciative audience is more addictive than heroin. It happens to me all the time...I wish!
Dont fret it my friend, just enjoy the experience
Phill
PS, not too many sherbets before you hit the boards!