Voodoo Lab

I have a radial tonebone classic that runs on a 15vdc supply. What is the best way to power this pedal if at all with the PP2? Can I use output 5 or 6 with the dip switch on? Or could I get a Y-adapter and run use outputs 7 and 8 with them adjusted at 7.5 volts each using the dip switch on function?