Low Current Stepper Controller

Ok, I have a new project planned and I want a stepper motor with a very high gear ratio. I'm talking about a 10:1 gear ratio. So I found these, but they are (only) 10:1 and I think I'd also like to microstep them.
https://www.oyostepper.com/goods-302-Nema-17-Stepper-Motor-Bipolar-L%3D48mm-w-Gear-Ratio-51-1-Planetary-Gearbox.html

I also bought some stepper controllers: https://www.oyostepper.com/goods-111-Digital-Stepper-Driver-10-42A-20-50VDC-for-Nema-17-23-24-Stepper-Motor.html
However, the current required for this stepper motor is very low: about 0.16A at 5V 30 ohms. If this is correct, then the DRV8825 will be running at currents well below its normal current range.

Have I calculated the currents correctly, and will the driver be able to control the motor without letting the magic smoke out?