Greetings,
We (Anvation Labs) have got pretty good grip with Arduino, Sensors and various connectivity protocols (BLE, WiFi, I2C, SPI etc) that I believe will be needed in this project. Please have a look at my portfolio - it will give you a good idea of our capabilities. We can take care of the complete project starting from design till final manufactured system.
Depending on what you need as the final system - we can discuss the timeline and estimates further and finalize. Looking forward to hear from you.