Delta PLC Pump Control

I am automating a three-pump pressure-boosting skid and have chosen a Delta PLC paired with a Delta DOP-series HMI plus a single VFD that will rotate between the pumps. The job covers the full PLC logic and matching HMI screens... (Budget: $250 - $750 USD, Jobs: Alarm Systems, Automation, Electrical Engineering, Electronics, Microcontroller, PLC, PLC & SCADA, Programming)