It really is a tough call. Right now your gameshape is pretty stellar, not going to get much better next week. I think it depends on if you think you can beat him with a Normal at home in game 2. That would give you a great enthusiasm jump for game 3, which might give a better chance at victory than you'd have in game 1.
Your enthusiasm is probably really high right now, which means your enthusiasm is going to drop fast, so unless you can normal game 2 and win, I'd probably go for game 1 instead of waiting. Unless he plays CT in every match you won't get an enthusiasm advantage series by playing a Normal in the first game. If I were him I'd probably play CT, Normal, CT. But who really knows. No matter what you choose it's going to be a gamble.
If it were my decision, unless you can win game 2 with a normal, I'd probably go CT, CT, CT. But there really is no wrong answer.