I think that you need the gear reduction to get a decent launch and good 60' times. This is about the
most important part of a run. The trans brake is insurance at the start line to keep from rolling the
lights and going red. You do not have to leave at full throttle just because you have a trans brake.
Find the best RPM for launching your car. It varies alot with power, weight, tires, converter, etc.
A 2-step is handy if your rules allow it.