adding your spouse means new processing time. So you are feb applicant now, instead of September. I called CIC and I want to add my spouse, agent told me that I will have a new date of submission, I decided not to add my spouse yet then sponsor her later after PR.
My co worker got her PR after total of 16 months, she added her spouse in the middle of the application, on the 7th month. That time, the processing time was 17 months as well.
I am not disappointing anyone, just stating what is told by CIC and the experience of a friend.