Yes! If each family member fully understands the meaning of baptism, and each one has personally place his/her trust in Christ for salvation, we encourage families to be baptized at the same time. It is a wonderful expression of commitment.
Young children who wish to be baptized can attend a baptism class held regularly throughout the year through Rivers Church Kids.
However, it is important to remember that baptism is a personal statement of faith, not a family tradition. It is usually not wise to delay your baptism while waiting on other family members to accept Christ, particually children. This puts an undue pressure on them and elays your obedience.