Baptism is a true picture of the death, burial, and resurrection of Jesus. When a person is baptized, he is openly identifying himself with Christ, acknowledging that he has both died and is raised again. He has died to self, to sin, and to false religion, and he has been resurrected spiritually by the power of the Holy Spirit.. When you understand these things and have made these choices, being baptized makes your commitment more real to you and is a public testimony of your choice.
This is not a matter of waiting - it is for when you feel you have decided to die to self and sin, and made a choice to live with the power of the Holy Spirit in newness of life with Christ.