It is better for both of you not to go ahead with the marriage yourselves. And whenever you need nikah you should do nikah on Shariah pattern that is masnoon and common. Court marriage is not the Shariah way of nikah. However, though it is right if adult and wise Muslim male and female do nikah as per Shariah it shall be valid. The consent of parents is not necessary for nikah to take place, but it is hoped that without their consent there might crept misfortune. Also if the nikah is done in non-kufu the father of the girl shall have the right to revoke the nikah.
Allah (Subhana Wa Ta’ala) knows Best
Darul Uloom Deoband