well if you really want money you should get an DDR Extreme arcade machine... you'd get people traveling from Wyoming, Grandville, Kentwood, and Jenision there.... you could charge like $1 for 4 or 5 songs and it'd do well and have the projector seperate from the machine... it'd bring in more people... a LOT more... but you'd have to keep the pads cleaned off every once in awhile otherwise those customers will leave and post on
www.ddrfreak.com that you have crappy pads... as for PIU you could wait for summer and buy Pump it Up Exceed SE for PS2 or Xbox (depending on which version is better) and have that setup so it can be played too... I'm guessing that this release will alow configuration so you could use colbalt flux pads with it.