I believe I could help with the PCB design and manufacture but not the case or the software. I have recently designed several Blue tooth products using Nordic and TI devices NRF 8001, NR51822, CC2541, CC2564 and the Laird BL600 and MDBT40 hybrids. The devices contain a mixture of Flash, orientation / motion device, RTC, LED's and buzzers.
If you think I could help then please come back to me and I will send you some examples, one being circular with a diameter of 3cm
The current price and timescales are only place holders to allow me to communicate with you
best Regards
Dave Lelievre