ah a man after my own heart, good choice

looks like you did a good job, although bkenobi is right you could probably just removed the sensor and ran a wire to and from, secure it in the barrel with some hot glue & stash the PCB in the grip.
tidbit that gun is modeled after a 92/96 (9mm/.40) Brigadier (brigaider had heavier slide "wavy hump"), although the brigadier also came with finger groove wrap around grips.. that guns got regular 92/96 grips so not completely accurate.