Look at this way. Check out a travel trailer. With your TC as low as it is, supports under the belly and then you have four jacks that reach outside of where a typical travel trailer would....which is more stable?
The TC has more ground contact than the travel trailer (pallets and jacks offer more ground contact than 4 tires and most will not store with their stab jacks down) and it will be around the same height.
Short of your pallets breaking, a corner giving out or jack bending/breaking your TC is more stable than a TT or fiver and you don't see this flopping over in anything short of a hurricane.