The direct drive and larger porp is more likely to give you the planing you desire. If it is too much, switch to the smaller prop. You can also control planing with throttle.
The plastic boat the motor,drive shaft came out of was designed to go at a somewhat scale speed, thus the small prop.
That second boat is a Police boat. When push comes to shove the real one could get up and go.
Hang on to the geared motors. You may come on to plans for a tug one day and use them both for a nice powerful tug boat.
One more thing. That hull reminds me of a PT boat.