I am still trying to figure out components and my car is space challenged. It looks like a Hyper 9 motor will be the power, I have read that I may need up to 5 18650's. This is not even a weekend driver it is a race vehicle with a VW transaxle. I need as much torque and rpms as I can get for six (6) 90 second runs in an event and some slow driving to and from actual course. Car will be turned off for about 10 minutes between each run. Can I get by with 3 or 4 ? I could stack 5 if necessary.