In the picture of the board, the single DIP switch is wired in parallel with the RUN/PROG switch. This helped during prototyping before I had a case. Also the two tact switches on the DIP area of the protoshield are temporarily the foot switch inputs. When I interface the foot switches to the board they will be wired in parallel. External LED is connected to pin 13.
I ordered foot switches on Ebay but they have too much stroke. I may try to adjust the spring and add stops. When I go to the Dayton Hamvention in May I'll take a look at a Heil foot switch, it's supposed to be a nicely made model. If it has a short switch and is "clicky" (like with a microswitch) I may try that.