I watched your vid, good breakdown of the replacement. But I guess I question how you knew how much to jack up the hub without measuring the height when the car is on the ground.
With the car on the ground I measured from wheel/hub center to the wheel well/fender which came to 13.5 inches. So when I put the car up on the jack, I knew I had to jack up the hub till the center measure 13.5 inches to the wheel well/fender. That is the best way I could find how to get an accurate measurement of what load actually would be with the car on the ground.
So with just jacking up the hub without knowing how high to jack it up, it isn't possible to know how long the endlink truly needs to be.