I've learned that height requirements mean nothing in terms of child suitability
I have a 4, 6, and 8 year old. The 8 year old was tall enough for everything, my younger 2 were tall enough for all the 42 inch rides. They were terrified by everything! The motion simulators are really intense and the river adventure had all three of them crying by the end! Child swap was our friend this trip.
However, the Kong structure looks really impressive as it's being built and I'm sure it will be a great ride.