I do all of the adjustments when changing TV's.
Definitely start with the former height measurement assuming that is the exact trailer coupler height.
I would check and adjust for the weight distribution measuring the wheel wells or at a scale. Wheel well measurements are fine if you don't have a scale handy. I don't see what WDH you have, but this entails adding or subtracting washers with my Equal-I-zer.
Finally, check and adjust the trailer angle as needed.
It's almost the whole setup, but good to do to make sure you have it right.
DW, 3 Kids and our Goldens
2012 Shamrock 233S
2008 Toyota Sequoia 5.7L 4WD