It looks like you should be able to control the speed of the motor remotely - Jandy motors play very well with Jandy automation.
Note that the seal plate and impeller from the Jandy pump will not work on your SuperFlo pump, so don’t even worry about the screw and diffuser/seal plate.
If I were you, I would get the higher HP SuperFlo impeller and the higher HP diffuser (and don’t forget a Tune-Up Kit with new gaskets and a new shaft seal). You will get the same flow at a much lower speed - you will barely notice the pump running on your electric bill.