I currently have a edge juice w/ attitude. One question I have, can you stack the two since Edge also modifies timing and fueling like the smarty? Or should I junk the edge and just go smarty? Also, will the stock CP3 keep up with the combo? I am going to go with a FASS 150 this summer for safety anyways, and a South Bend Street/Strip clutch. I have heard a lot about the smarty, all good, but I do like having the adjust on the fly. Any input would be appreciated, thanks! Also, how much do the smarty boxes cost roughly?