It may be too short notice to master the e-brake launching technique. Here's what I would do.
1. Try to get the stickiest tires you can before the race.
2. Heat the tires up nicely befoer the race. Not a John Force burnout, but make sure the tires are clean and hot.
3. Put the car in 2nd gear and stage. Put your brake foot down hard as you can and try to build as much boost as possible while at the line. Hopefully, somewhere between 3 to 5 pounds of boost.
4. When you launch, simply let your foot off the brake pedal, and gradually put your right foot on the floor, don't go to the floor immediately. I have better luck with this technique. When you get to about the 60 foot mark, or a little farther, have your foot all the way down. I get consistent 1.75 60' times with this technique. And my car is a mild car. That is using Hoosier quick time pros.
5. Remember, you are launching in 2nd gear, so let the car shift into 2nd on it's own. Then like Bo said, shift into third at about 5200 rpm.
Traction upon launch is critical. You need to get a holeshot on this guy if you can. The 'vette will pull hard on the top end, so you need to make it up on the launch. Don't forget to put the highest octane fuel you can in the TTA. Watch your knock gauge. No race is worth a thrashed motor.
Go out and practice your launch technique this week before you race him.