Looks like a good deal to me.
Wheel bearings are easy to check,
Jack up the wheel off the ground, and spin the tire around, shouldn’t hear any funny noise’ s, then grab the tire and try to rock it up and down ,or side to side, shouldn’t be any play in the hub.
And the motor ,I would have a compression test done. Make sure all the cylinders, read the same
Enjoy your new boat.