It’s really upto you. To ensure success in PGWP approval at the border make sure that you have all the documents that the border officer will need. I have read horror stories when it comes to meeting a CBSA officer without proper document preparation.So should i wait?? I got WP-EXT on 27th may stating that “as proof that you are authorized to work for any employer, in any occupation with no restriction on hours until September 22, 2022 or until a decision is made on your application, whichever is first.”
Disregard the Sept 22, 2022 date (IRCC thinks it can process work permit applications in 120 days, which is not true since it’s taking 160+ days) you can work anywhere you want until you receive a decision regarding your application.