If you do get in without being reported, you should not leave again for 2 years. If you leave again, you will have the same risk again coming back.
If you stay for 2 years, you will meet the residency requirements again and can apply to renew your PR card without any consequences.
If you don't have a SIN you can apply for it. I do not know if Service Canada would find it strange that your PR card is expired but you don't have a SIN yet.
If you stay for 2 years, you will meet the residency requirements again and can apply to renew your PR card without any consequences.
If you don't have a SIN you can apply for it. I do not know if Service Canada would find it strange that your PR card is expired but you don't have a SIN yet.