Hi jeffsev,
That looks reasonable to me. Regarding inputs: connecting JP4 inputs to 3.3V should technically work but may be very noise sensitive. Normally inputs are run at 24V and through opto couplers so that all the wiring is isolated and doesn't couple into the logic.
If you do decide to use 3.3V signals I'd suggest adding a 0.1uF Ceramic Filter Capacitor to GND as close as possible to KFLOP.
HTH
Regards