I'm running 4s.If it would do that on 3s I think you'd have to crown a new king to brushless motors.
I was just trying to figure your motor speed based on voltage drop and looks like you are figure 3.15v per cell to get 63000rpm with that motor and batteries.
I would be very hesitant to run that setup on quality 4S cells as you'll have some serious speed going there.
“Everyone has a right to be stupid; some people just abuse the privilege.”