Just to update you guys: Got my passport back on 1st November and landed in Landsdown bridge (1000 island) on 4th November. Here is the experience:
My wife and I, started from Mississauga on 7:15 and reached bridge entry point on 12:15 PM (with 45 mins break and Toronto traffic).
Toll to be paid: 4 CAD (no toll during coming back)
Stood on the queue for US entry with nervous hearth. There were 4 to 5 lanes open. Each having 4/5 cars in queue. After 10/12 mins, it was our turn.
We gave our passports and said we want to land for Canada PR. Then office said 'o, do u want to flagpole?'. I said 'yes'. He was very cordial and welcoming. He showed us one parking spot. We drove to the parking spot gave the car keys to another officer and she asked us to go inside the building. Inside the building had to wait no more than 2 mins. They gave us the passport and a white paper mentioning 'flagpole'. After coming out we got into the car and the officer in the parking lot showed us the 'u' turn towards Canada though it was easy enough to spot.
total time on US side: 15 mins (absolutely smooth process)
We drove toward the Canada gate (100 meters). Only one car before us. We told the office we want to land for PR. He asked if I just went to US to comeback, I said yes. He asked us to park in a spot and go inside the building. Inside the building an office took our passports and COPR. After some time he asked us to sign the COPR and congratulated us for getting PR.

Inside the building it took 10 mins. We were the only one. Also, all the Canada officers were also extremely polite and helpful.
So, it took total 30 mins to land. Then we went to Service Canada in Kingston to get our new SIN and that place was also no waiting.
I will suggest all to go to 1000 island bridge. Drive a little more and land there. Its absolutely walk in the park. Moreover, enjoy the beauty of the island from the bridge. It looks stunning.