What gearing for my brushless RC8T

hey very cool chart, thanks for that. so according to that and the 40mph rule would 15 pinion and 54t be fine?
Differential Ratio: 4.3
Transmission Ratio: 1
Other Ratio: 1
Spur Tooth Count: 54
Pinion Tooth Count: 15
Total Voltage: 14.8
Motor KV: 2200
Tire Diameter (inches): 5.65
Tire Ballooning (inches): .2
Motor Current Draw: 0
Motor Coil Resistance: 0.006
Spur/Pinion Ratio: 3.6 : 1
Total Ratio: 15.48 : 1
Tire Circumference (inches): 19.01 inches (482.77 mm)
Rollout: 1.23:1
Total Motor Speed: 32560 RPM
Vehicle Speed: 37.86 mph (60.81 km/h)
Effective KV Value: 2200
KT constant: 0.61 oz-in/A
Motor Torque: Amperage not specified...
Final Torque: Amperage not specified...
Final Power: Amperage not specified...