John, your technique sounds adequate. Except instead of 30' to apply decrab rudder, I like to suggest below 5' is more aligned with the FCTM.
Btw that 5 feet RA call gets omitted about 2x a week here and I have no idea why
Yes, I agree that 30' is a bit early to decrab, and after 20' or latter is maybe better, however it is interesting to note that in the FCOM, under autoland, FCOM DSC-22_30-80-30-10 it says:
At 30 ft RA, the AP/FD aligns the yaw axis with the runway centerline and the aircraft flares on the pitch axis
I always thought if this is how the automation does it, then maybe I should also fly it the same way.
BTW, the Airbus I fly only have rad alt calls at 50, 40, 30 and 20, We don't get 10 or 5.