After over five hours spent rearranging my workshop, I began final assembly of the APRS system. I decided to install a locking power plug to the case instead of running the power cable thorugh a plastic strain-relief.
After beginning to solder the wires from the D-sub socket to the circuit board, I realized I probably hadn't left enough room to bend the wires around, so I'll just run the wires straight out thorugh the side of the case.