usually -1 in the front is all thats recommended. I'd switch it to a -1 in the front and be done with it. Usually the best compromise for a normally ridden bike where you don't want to lose too much top end speed. I've had mine with a -1 for 7k miles with no problems at all. To keep the take-off from a stand-still strong I'd just learn how to launch properly and if you're worried about roll-ons get a bigger bike J/K. Its seriously not going to be a huge night and day difference with a -2 to -1 change