I AM IN NEED OF ADVICE ON A REPLACING MY PROP WITH ONE OF THE 4 BLADE COMPOSITE PROPS FROM BASS PRO SHOPS ARE THESE ANY GOOD? MY BOAT IS A 17'JAVELIN FISH SKI WITH A 90 115 JOHNSON V-4.BOAT HAS A 6"JACK PLATE.MY CURRENT PROP IS A 13 3/8 X 17 PITCH ALUM. MY RPM IS OVER 6000 AT 40MPH.I KNOW THIS IS TO MANY RPMS FOR THE MOTOR SHOULD BE AROUND 5800.THE COMPPROPS CHOICES ARE 12.7'X 19 4 BLADE OR A 13.6"X 20 FOUR BLADE.ANY SUGGESTIONS PLEASE HELP. 