Need Advices to Setup Rear Suspension

You told a thing that make sense for me. Maybe try to leave in lower RPM. I was seeing some videos of my car and I can see that at footbrake around 2500rpm front suspension looks like too much high and this can harm launching. Anyway finally I'm ordering my Calvert monoleafs and installing this new springs should help me on start.

By the way, the car still running at street... lol

Thanks for your advice man!
The other nice thing is adjusting launch RPM requires no wrenching so it's an easy change. Good luck!