Being water baptized has nothing to do with whatever Pastor you choose to use because God is not about denomination/non-denomination, but is all about your committed relationship you have with Him so choose whichever one you prefer. You have already repented of your sins and seem to already be indwelled with the Holy Spirit from the time you asked Jesus to be your Lord and Savior. There is nothing wrong with being immersed in water, but to know it is only an outward appearance to others that you have already received Jesus and are indwelled with the Holy Spirit.
This is a snippet of a class I teach on Baptism, but not to deter you away from being immersed in water, but for a better understanding of being baptized.
Acts 19:1-7 John’s baptism was for repentance and the Holy Spirit was not received nor even heard of yet until the day in the upper room that Jesus was raised up to Heaven and the Holy Spirit fell down on all of them in that room. John baptized with water unto repentance but only as a symbolic sign that one had already repented of their sins and were washed clean by Gods grace.
John 14:16, 17 Jesus is telling his disciples that he will not leave them, but will send the Holy Spirit to comfort them and teach them. Jesus himself did not baptize with water, but with the Spirit and Christian baptism was only instituted after the resurrection when the Lord gave the commission to his apostles to go into all the world and preach the gospel to every creature, Matthew 28:19,20.
Acts 2:38 and Acts 10:47, 48 are both talking about water, but not for the remission of sins, but for an afterward appearance of acknowledgment. John 3:5-7 We are given the Holy Spirit at the same time of repentance and has nothing to do with water baptism as I have stated that water baptism is an outward appearance to others that you have already confessed and believed and received the Holy Spirit.
This is what Smith's Bible dictionary says:
To be baptized for Christ shows an intention to become a true follower of Christ. John baptized with water unto repentance but as a sign of it, perhaps only a sign of their willingness to enroll themselves among John’s followers. Jesus himself did not baptize with water, but with the Spirit and Christian baptism was only instituted after the resurrection when the Lord gave the commission to his apostles to go into all the world and preach the gospel to every creature.
Act 10:47 Can any man forbid water, that these should not be baptized, which have received the Holy Ghost as well as we?
This verse shows that these men had already received the Holy Spirit, but wanted to be baptized in water also as followers of Christ. So I believe both verses in Acts to be water, but not for the receiving of the Holy Spirit, but an outward appearance to others that they have repented and received the Holy Spirit already.
Mat 3:14 But John forbade him, saying, I have need to be baptized of thee, and comest thou to me?
Mat 3:15 And Jesus answering said unto him, suffer it to be so now: for thus it becometh us to fulfill all righteousness. Then he suffered him.
Mark 1:1 The beginning of the gospel of Jesus Christ, the Son of God; 2 As it is written in the prophets, Behold, I send my messenger before thy face, which shall prepare thy way before thee. 3 The voice of one crying in the wilderness, Prepare ye the way of the Lord, make his paths straight. 4 John did baptize in the wilderness, and preach the baptism of repentance for the remission of sins.
John's baptism was prophesied by the prophets in the OT as only being for the remission of sin before that of Messiah come. John said in Mark 1:8 I indeed have baptized you with water: but he shall baptize you with the Holy Ghost.
