Hi,
First Holy Communion before first Confession is NOT an option and your pastor should know this.
Canon #914: That children should be prepared to celebrate First Confession before First Communion. “The basis for this observation, for children, is not so much the state of sin in which they may be, as the formative and pastoral aim; that is, to educate them, from a tender age, to the true Christian spirit of penance and conversion, to the necessity of asking pardon of God and above all to a loving and confident abandonment to the mercy of the Lord. (LETTER FROM THE CONGREGATION FOR THE SACRAMENTS TO THE NCCB ON THE SACRAMENTS OF RECONCILIATION, HOLY ORDERS AND MARRIAGE, Rome, December 20, 1986.
Fr. Vincent Serpa, O.P.