Btw, there is a problem with your Titan size
calc. Free fall calculator that you use doesn't account for fact that objects have terminal velocity, instead it assumes that objects would continue to gain speed with same acceleration.
Realistically, Susie and Kris with their position (stable, head down) would achieve terminal velocity of around 240-290
km/h(around 70m/s). It would take around 7 second to achieve this speed, and during this they would cover distance of a*(t^2)/2=10*(7^2)/2=245 meters, and remaining 22-7=15 seconds, they would cover distance of 15*70=1050 meters, 1295m in total. It would downgrade feat from 430 tons to roughly 130 tons.
You should probably write new calculations under new one as edit, and ask CGM who accepted calc to evaluate changes