He finally had evidence of work in France for proof of my carte Sejour, so I applied online in the end of October.
It's been nearly a month, but I don't know if I need to validate my long stay visa if I am applying for this nor how long it would take as I would like to work too. And get my residency before my 6 months run out.
As the spouse of an EU citizen exercising the right of free movement under union law, you don't need to be in possession of any particular document to remain in France. You don't need a long-stay visa, much less to validate one. All you need is a valid passport and to be able to prove your relationship to your husband and that he is German.
Failure to meet the administrative requirement to register with the French authorities and get a carte de séjour can only lead to a fine (presently €200). You can't be expelled nor face any other punishment. Furthermore, once you've applied, you've fulfilled your obligation as any further delay is the responsibility of the French state and cannot be held against you.
To restate: as long as you apply within three months of your most recent arrival in France, you've met your obligation.
Comment demander la carte de séjour ?
Vous devez faire votre demande sur le site de l'ANEF (Administration Numérique des Etrangers en France) dans les 3 mois de votre entrée en France.
En cas de séjour irrégulier (demande déposée plus de 3 mois après l'entrée), un droit de visa de régularisation de 200 € à régler par timbres fiscaux sera exigé lors de la remise de la carte
How to apply for the residence card?
Apply at ANEF (Administration Numérique des Etrangers en France) within three months of entering France.
In case of irregular presence (application submitted more than three months after entry), a "regularization" fee of €200, to be paid with tax stamps, is required before the card can be issued.