to be extra clear, steps 1+2 should be done without your foot on the pedal.
in my opinion, the best way to do step 3 is to loosen the hihat, and press the pedal down, rather than lifting the cymbal by hand. that way you get a better feel for how far the travel is for your foot.
i think the response is more natural if you also raise the hihat a little further after you have completed the calibration, so that there is a range of travel that corresponds to "fully open".
once you understand how the calibration works, it is very quick and easy to try different settings until you find a setup that works best for you.