Actually I think you would have to shift sooner if you drop -1 or -2. Your R's are going to be higher at a lower speed. Not to mention that -2 will make you frown at highway speeds, would me anyway. I went -1 and loved it then I went +1 on the back and just that small difference was noticeable especially on the highway. I went back to just the -1 and am happy there. As wheelies go, it is a bit easier with the sprocket change but It isn't as drastic as you might think. There is also the increased chain wear with a -2 configuration, but I don't know if its enough to worry about. Start with -1 ... its the cheap ($30) and easy to see if its enough for you.