Greetings,
Interesting project indeed. I think I can get you this up and running. I have relevant expertise in Sensing (IMU, Gyros, Acc, Mag, Baro etc.), Circuit design, Battery management, Embedded systems, PCB design, Bluetooth which I think are all required here. Please see my portfolio for more details.
However it would be important to discuss out the details before moving forward. Things like the IMU, battery life, communication mode etc. all need to be sorted out if not already done. If I am not mistaken you had posted this project earlier also (or may be a similar one by somebody else) - so hopefully we have something to start off with.
I have placed an initial bid and based on the actual scope will update it accordingly.
Look forward to hear from you.
T & R
Alok Pugalia