Peripheral vision
What you state in post 8 (at 06:22) is really important: more important than numbers like , do I flare at an auto callout of 30 or 20, is the use of your peripheral vision to judge height and descent rate.
During the approach you look a lot inside to stay on the numbers (glideslope and speed) and you look outside at the touchdown point.
However, as you are close to the threshold (when you are between 100 and 50 ft) you must shift your vision towards far down the runway and keep it there. You will then be able to judge how quickly the ground rises towards you and be best able to judge the flare maneuvre. Do not anymore shift your vision to inside, because that will break the continuity of your visual flare appraisal.
Many times, when evaluating a somewhat rough landing, you will realize with hindsight that you have screwed up this shifting of the point where your vision is aimed at. This can happen after a long flight (fatigue, reacting just a tad too slow), or when you look inside to check speed or thrust setting once more, just to be sure.
Finally, 1.9 g is indeed firm, but remember that a greaser is not a criterion for a good, safe landing, according to the manufacturers of commercial airplanes.