Minimum limit for current and maximum limit for voltage while calculating power
If so, given an extreme example, would i be able to power the motor at
  100V @ 1.89A(not that it would be feasible or would i ever do it), or
  is there a max limit to the voltage and/or a min limit to what the
  current supplied must be for the motor to work?


Power limit for the motor is 204 watts - that's stated in the improved link.

Also note that the speed of the motor is dependent on voltage (\$K_V\$) and that is 1270 rpm per volt applied. The more applied voltage the faster it spins and, for a fixed mechanical load, the power will increase proportionally with RPM squared. So, for a given mechanical load, power quadruples for a doubling of voltage.

This cannot be avoided because the motor spins faster with more voltage applied. Output power is \$2\pi n T\$ where n is revs per second and T is torque to the load and for a fixed mechanical load, a doubling in n also means a doubling in T hence power output to the load quadruples with a doubling of voltage.

At 100 volts applied (with only a light mechanical load), the speed of the shaft would be 127,000 RPM and the motor will shake to bits well before that point.