If you guarantee the drive wont slip against the driven part, that’s fine.
It should be able to give very fine angular accuracy, possibly greater than you need !
Check the motor power, torque, speed specs.
A simple h-bridge with PWM will allow good speed control - forward and reverse.
If you think there’s any chance of the motor getting out of sync with (e.g. the turntable), then it’s desirable to monitor the turntable position rather than the motor.
If your drive is with a toothed belt, that motor/encoder combo would be suitable.
A flat belt has the potential to slip much more easily.
Depending on repeatability required, there can still be a case for a ‘home’ sensor on the driven surface - which could allow slippage to be corrected.
Certainly heading in the right direction.