You are required to contact Fr. McGuire at least six months prior to your desired wedding date.
During the six months or more prior to your wedding there are a great many preparations, the most important do not include mailing out invitations, planning the menu, etc. Instead, the most important preparations relate to the sacrament, the ceremony and your relationship. The Sacrament of Marriage is for lifetime. The wedding is important, but it is only one date on a calendar.
Do not book a hall, etc. until your date is cleared with Father.
Marriage is a sacrament and a marriage ceremony must be pre-eminently a religious celebration.
If one of the two is not Catholic Marriage outside of Mass (no Mass) is required unless special permission is obtained from the Bishop.
For more information on the meaning of marriage click here.