+1
Also, you may already know this, but for a DPDT, just omit the LED and the connections on the middle set of contacts (top to bottom as shown). Just pretend that the outer two sets of contacts on the 3PDT are the two sets on the DPDT.
As for the wiring the power, I could be wrong, but your circuit could be positive ground (due to the PNP transistors). See this article:
http://www.generalguitargadgets.com/pdf/ggg_ff5_instruct.pdfMaybe someone more familiar with this can chime in.