Here is an excellent spreadsheet to play with. Paste in the JPG of your
chosen compressor map and start playing with the numbers. Set the
starting atmospheric conditions, altitude, RPM and MAP. Then it gives
you A/R and mass flow. Then plot it on your compressor map. Play with
things like compressor efficiency and intercooler efficiency, altitude,
MAP and RPM and see what effect they have.
With some experimentation you will see that it is important to keep
things efficient, or it is easy to push the 60-1 compressor into the
surge area. There may be some better compressors to use...