Over the holidays I was able to finally nail down some requirements. The design has been simplified a lot, eliminating a whole host of hardware that wasn't going to be used anyways. As a result the schematic is largely finalized and the board design basically done, now in just 5cm x 5cm. I've started adapting the software to all of the latest changes and once it's running again in prototype it will be time to order the v1 boards.