Application of SSN: case specific questions.

I am new to France with my family waiting for the residence permit.
My visa is with "Passeport Talent – Carte Bleue Européenne" and my family's "Passeport Talent – Famille".

As the next step, I am preparing for SSN applications and got following questions while reading this QA: https://forum-assures.ameli.fr/questions/1822056

1. Is it necessary for us to have the residence permit and we cannot apply for it just with our visas?
2. Should I submit a separate application for my spouse?
3. As a married couple, all utilities are under my name and my spouse's name is only on the apartment contract and the bank account. What should I do for her utility bills? Can she present three apartment rental bills?
4. If we both are applying for SSNs, who should we add our child to?
5. If temporary residence permits are issued, can we still apply for SSNs with them?
6. My wife recently got pregnant how can we specify this on the application? Should we wait until the birth and report it?
7. Due to the pregnancy, we are expecting to meet doctors quite many times before the actual issuance of our SSNs and green cards. Can we get these expenses reimbursed retroactively?

Thanks for your answers in advance.