I want all the motors to rotate at 80 rpm in the clockwise direction. Any and all help is appreciated.
Brushless DC motors need some form of controller to drive them - you can buy such a thing or design your own - google will help you out .
80 rpm seems very slow - not sure you will achieve that and you will need some form of feedback control .
I would post more info on these motors for more help.
You need a ESC (Electronic Speed Controller) for each motor.
You use the Servo library in the Arduino to control the speed.
Now, how exact does the 80rpm have to be? How much in step do the 4 motos have to be?
You can try. If you need more precise speed control you need some feedback ( a sensor that tells you a tick for each rotation (NB: Some ESC controllers have an anloge signal output of the RPM)) and then you code needs to adjust the speedsetting to get to 80 rpm.
Or you go and buy encoder and driver electronics that does it (ODRIVE comes to mind)
ESC may also need to be "armed" before it will turn on.
Based on what I read on the page this should be possible.
You have a power connection, a PWM control wire (15-25 kHz - much higher than the normal PWM frequency of an Arduino), a direction control wire, and a hall signal pulse output. The block diagram suggests 6 pulses per rotation for this.
Basically you have to read the pulse output to measure the speed of the motor, and adjust the PWM duty cycle accordingly. A PID control may be in order, depending on your actual application of these motors.