1. By right 90 days will start from the day they received your application package. In my case, they received my application package 2nd July, my AOR is 26th Aug and my nomination is 6th October. Total number of days is a little more than the 90 days window, but I think still acceptable.
However, I see posts that they are taking a bit of time now processing the applications. Like some cases will take about 4 months before getting a nomination.
2. I think Sasakatchewan just recently opened the PNP application but the quota is full already. You can try checking PNP openings by January 2016.