This makes a liar of all of the saints who have come after acts, who walked in the unction from on high.
And in fact, makes a different doctrine, which says that those in the upper room were not saved before the Holy Spirit was poured out upon them.
I agree that when we receive Him, receive Jesus into our hearts, that we are at that time, saved, born again of God, holy and pure in Him, of His seed. But to say that this is all that their is to what God would give us leaves the believer weak and prone to defeat, without power to effect a witness which has the power to save others. The what you call special experience is actually not so special at all, but should be not only normal, but experienced by every person who believes, who has become a child of God. It is the power of God for the work of Jesus, in the same way that Jesus Himself was baptized in the Holy Spirit when He began His works.
And here is why. They are not our works, just as Jesus said of His works that they were not His, but His Father in heaven, He was doing the works, through Him. As we have seen Him do, so we are to go and do likewise, in the very same way that He did. Jesus sends His Spirit into us to give us God's nature, which is what Jesus was born with. So by the Spirit are we born of God, just as He was born of God, conceived of the Holy Spirit. But when we go out into the world, to do God's works, we must do so in the power of the Holy Spirit, in the baptism of the Holy Spirit, just as Jesus did. Otherwise, the works are our works, and not those works which have been wrought in God. Otherwise the works are not those which have been prepared from before the foundations of the world, that we should walk in them.
Without the baptism of the Holy Spirit, the church is weak, fraught with division, ineffective, and scorned by the world. With the baptism of the Holy Spirit, the church is a vessel of God, which has the power of God to effect salvation to all, the least and the great, and to be the light of God in the world. But we don't believe. This is grieving of the Holy Spirit. He morns the loss that this unbelief has wrought.