I have an Epic Flash driver and 7 fwy. Looking to add a 5 fwy adjusted to 17 degrees to replace my RBZ 3hl. My driver has a 55 5.5 regular shaft. My 7 fwy has a 65 5.5 Regular shaft. Should I go with the same shaft as my 7 fwy in the 5 fwy? I like the ball flight in both my driver and 7 fwy. Im thinking the 55 shaft may be too light for the 5 fwy.