Did you measure after trailer on Hitch ball WITHOUT spring bars hooked up?
That compared to the other measurements really show you how much the WDH is working for you.
With the current info posted it sure seems like you have it right.
2019 Wolf Pup 16 BHS Limited, axle flipped
2019 F150 4x4 SCrew SB STX 5.0 3.55 factory tow package, 7000#GVWR, 1990 CC Tow mirrors, ITBC, SumoSprings,