Congrats buddy. Your experience helped me on my day of travel !Sorry for the delayed post.. but here is my experience.
First of all, I wanted to thank everyone from this forum for your valuable inputs. it helped me a lot to plan my landing procedure
below was my experience.
Cananda POE -
I traveled from Buffalo, NY Peace bridge border on 07/30/2020 (Thursday). At entry point the officer asked me the reason for entering Canada for which I told him that I want to complete my landing procedure and hoping return back immediately but planning to permanently return back soon. ( I also did have quarentine plan just in case ). He gave yellow slip and directed me to the CBSA office. I have not recieved any pushback for going back on the same day. They processed my PR application and sent me to customs. Having fully completed BSF forms will save you a lot of time and confusion so i recommend everyone to have this prefilled. After completing customs, one of the nice officer escorted me to my car and showed me how i can make a U-turn.
It was a very straight forward and peaceful experience on the canadian side.
US POE -
While returning back to US, officer at the booth found my visa was expired, and said he cannot allow me to enter US since my visa was expired and asked me to return back to canada and have my visa stamped. After some convincing and explaining about AVR process, he finally asked me to park my car and some other officers came and checked my car and asked me to wait at a designated parking spot but not to get out of the car. After about 2 hours another immigration officer came to me and asked me for some more general questions about why i was there and what i do in america and went back in, after about 15 mins she came back and told me i was good to go and allowed me to enter US.
I would recommend everyone to have a copy of AVR proclamation document printed out from the CBP/Travel State dept website so that you have something to show them incase they ask you to return back to canada. My $0.02! That said, please DO NOT SHOW the document unless they ask you to return back as most officers would already know about AVR process and will get annoyed if you tell them what to do.
I am not sure whether you can follow the same path as it depends on the border officers on both sides, but I hope my experience will help you plan a little better when you land.
Wishing you all goodluck.