I am in the market for a quick shifter. I know an air shifter is better but I already have one bottle on the bike and I don't want a second bottle hanging off the bike. I have done some reading and it seems I need both the dynojet quick shifter and ignition kill if I go with dynojet. Is this correct? The MPS is only $149 and I believe it would be all I need. Anyone running either of these set-ups can you comment?