CONGRATULATIONS NOONOO!! That's terrific news and makes my day brighter
You should still be able to send the OWP app into CIC and ask them to attach it to your file, yes.
That is the correct form, but it's generic so there may be a lot of stuff that doesn't apply to you. Attach a piece of paper to the back of that form explaining that you want to file an OWP
with your PR app. Include your UCI number and the details of your PR application (date filed, etc.).
If I remember correctly, you send all the documents on the checklist. Perhaps minus the security clearances. Someone with more experience can elaborate on this though.