I've had several different race car combinations and every package was completely different on the launch RPM.
For example; my stroker big cube Camaro works best if I allow the converter to flash off the line. With this car I just load-up the drive train at about 1800 RPM and allow it to flash-up to 5200. If I try to lauch with more RPM, the 60 fts slow down. Less is more on the launch!
My tube chassis car w/ trans-brake is completely different. The more RPM I can stall it on the line, the faster it goes. I also foot-brake this car and more RPM is better. Additionally, more consistent ETs and better reaction times with the higher launch RPM with this car.
Therefore, you should TnT a lot and try many different RPM launches to determine what works best with your car.
Warren