So glad I could eventually get this project going.
I am currently looking into the self-power design and options available, most likely would go with an ambient RF chip that would either charge a super capacitor or a small battery. I am open to other options as they come up during my research.
I am also working on the smallest footprint possible for the enclosure and the PCB.
I will keep this project updated as I proceed and hopefully I would be able to make it before the HackADay Prize closes, however, I am determined to move forward anyway =)