How to obtain temporary social security number

Hello, I am a Canadian university student and I will be coming to France this summer to complete a paid internship. Please se my questions below.

1. Just to confirm, the way for me to apply for a social security number is to send the completed "Demande l'ouverture des droits a l'assurance maladie" form with the required documents in the same envelope to my CPAM?
2. Is there anyrhing online I need to do?
3. How will I be updated on if my application is accepted and what time range should I expect before I hear a response?
4. How do I find which CPAM I need to contact?
5. Can I apply while I'm still living in Canada?
6. Do I need a French IBAN or can I provide my Canadian bank account information?
7 . Can I use my long-stay visa BEFORE it is validated to a VLS-TS residence permit for the required documents?
8. Will a rental lease suffice for proof of address?

Thank you!