I have understood your argument about the Paradox of Omniscience in favor of God being omniscient to be as the following:

1. Either God is omniscient because he is a three-part God or He is not omniscient.
2. God is but one part of the Holy Trinity consisting of the Father, the son, and the Holy Spirit.
3. These three parts put together equate to having all knowledge through knowledge by acquaintance–God’s knowledge of himself and his “limitations”, Jesus’s knowledge of mankind and human experiences, and the Holy Spirit’s knowledge of the soul in relation to desires and faults.
4. Therefore, God is an omniscient three-part God through knowledge by acquaintance because he is part of the Holy Trinity.

I object to premise three in the argument for the following reasons. When God created the sun, heavens, earth, animals, water, mankind, and everything else in Genesis, he had no prior knowledge of these elements or living creatures. None of these things existed before creation. The Holy Spirit and Jesus were not yet created. So where did he draw his knowledge by acquaintance from when he was designing Earth and mankind? He couldn’t consult Jesus or the Holy Spirit when he made Adam and Eve in his image. God is not omniscient for the sole fact that he is part of the Holy Trinity. He knows all knowledge on his own because it is evident that he had this knowledge during when he was designing the world.

Perhaps a way to strengthen this argument would be to drawn on examples about God’s creation without any prior knowledge or experience that I mentioned earlier to refute omniscience through knowledge by acquaintance. God was able to not only create the existence of life, but was also able to experience his creation before he created Adam and then Eve.