pH/EC Meter Prototype Completion

I already have the schematic, PCB layout, and BOM for a handheld pH / EC meter, but the board has never been powered on. I now need the design taken all the way from desk-review to a fully working, calibrated prototype... (Budget: $1500 - $3000 USD, Jobs: Analog Electronics, Electrical Engineering, Electronics, Embedded Systems, Firmware Development, Microcontroller, PCB Layout, Prototyping)