A lot of work went into designing this board. Thanks to help from Chris Meyer and Devlin Thyne I ended up with what I think is a design that will be friendly for the PCB manufacturer.
The parts order from Mouser came in on Saturday. I printed out the copper layers and checked all of the footprints against the parts. Everything looks just perfect. Yesterday I placed an order with Seeed Studio for ten copies of the board. Hopefully I’ll have then in hand in about two or three weeks.