You need an underlying basis or application to obtain your SSN.

Yes you may request a different consulate location.

You should refile right away with an attorney.

Depends on whether CSPA applies to him. Consult with an attorney for guidance.

The documentation will assist in establishing your intent and you may enter together.

No a denial for your spouse’s application should not impact your own independent application.

Yes you may indicate X as inside Y.

The expungement would need to be disclosed regardless and should have been on previous GC application.

Yes based on the underlying asylum it is best to so.

You must apply for a marriage license from your local town/city official.