For proof of address: your (sponsor’s) proof of address is good enough.
Are you planning to mail? Or personally will be going there?
Go to the checklist of BLS as per Jurisdiction as the documents requirment varies slightly between provinces.
In Calgary, i took my Canadian Passport, Indian Passport, DL for address, and parents’ passports, all originals and copies. They took all the copies. But they will need your PR card’s copy for sure and Indian passport to show relationship between your parents and you.
Also, In Calgary (Vancouver Consulate) they wanted the PCC request letter from IRCC so i was only able to get it when i got the request and not in advance.