If electric motor can handle thrust load from prop, consider getting rid of the hard mounted thrust bearing and ujoint kit, and putting motor on soft mounts. Vibrations from the prop and motor will get transferred into hull structure through the thrust bearing. Quieter if motor and prop shaft are floating.
Those mounts look like the ones usually spec'd for much heavier gasoline and diesel engines, and do not have much "flex". To minimize noise, mounts must be carefully selected using motor weight, thrust and torque to keep it "floating" slightly. There are many much better mounts out there, one brand I have used with success is "Metalastic", their site has the charts needed to properly spec.
thanks for keeping us updated. Does the motor well get its own bilge pump?
a dry bilge in a wood boat may be impossible. In the old days shipwrights installed salt shelves under the deck near the devil plank so that rainwater would wash salt into the hull sides and bilge. The thinking was that wood rotted less in salt water than fresh. Is it true? I don't know.