15t front sprocket

hey fellow riders. I am changing my front sprocket to 15t. i have an 07' 1k. I don't have a torque wrench though. Do you guys think that I should hold off until I get one or should I still be ok?
 
Thanks for the input.

rent one, or borrow one from an autozone, or murray's.

I got no one to borrow from. maybe I should wait until I bu one. damn!!

If you use your common sense, you can do the job without one. I have done before, but hey your best doing what you feel safe doing yourself. If you don`t like the idea of judging it by hand wait till you have a torque wrench.