If you don't have the information for Best Angle and Best Rate readily available, the following will be VERY close to the mark -
As Best Angle and Best Holding speed are both Best L/D speed or Vmd, use the published HOLDING speed for BEST ANGLE. Note that published Holding speed will not exactly be Vmd (for relationship with the declining Thrust available on the low side, and for improved speed stability on the high side of Vmd), but the difference in actual performance is negligible.
As CI=0 provides for a high climb rate, use the Climb Speed for CI=0 for BEST CLIMB RATE. CI=0 actually provides for a speed in excess of actual best rate, but, as before, for all practical purposes produces a negligible difference between actual and achievable best climb rate. If you examine Power Available Vs Power Required for a Jet aircraft at the best climb rate, the 2 curves are almost parallel at that point, and some small speed variation from optimum makes hardly any difference.
Regards,
Old Smokey