Hello, Neal.
Since that 1600pps maximum starting pulse rate is when half stepping under no load, it sounds like it you might be able to achieve a starting pulse rate of 800pps when doing full steps, which is about 240 RPM. The speed that the bearing life specification was obtained at makes it sound like it can achieve speeds of around 300 RPM (though it cannot run this quickly from a standstill).
In general, there are a few things you can do to increase the speed of your stepper motor; you can read about those things in this forum post. In particular, increasing your supply voltage and gradually ramping up the speed can probably help your system, but the top speed you can get might be limited by the driver you are using. The coils of your stepper motor are rated for 1.7A per phase and our A4988 carrier cannot handle that without sufficient additional cooling.
-Jon