“Were the 3000+ FIRST sealed by the Holy Spirit, then baptized? Yes.”
Actually:
Acts 2:38: Peter replied, “Repent and be baptized, every one of you, in the name of Jesus Christ for the forgiveness of your sins. And you will receive the gift of the Holy Spirit.
In this case, the order was the exact opposite of what you said. How do you account for your error? Did you not ever read Acts 2:38 before?
Have you ever read the account of Peter in the House of Cornelius?