“...head of Christ is God..”
Where in the non-trinitarian tarnation did you come up with that one.
I Corinthians 11:3 states it plainly.
Where? As cited, it is a direct quote from the Bible, which verse (1CO.11.3) you could have looked up and read if you cared to do so (it is even in your poor official Bible), and is no more in conflict with the Trinity than the head of the woman being the man is in conflict with "there is neither...male nor female: for ye are all one in Christ Jesus." (Galatians 3:28)
Why is this non-contradiction apparently unknown to you, (which impugns being Catholic) as that you think 1CO.11.3 is non-trinitarian?
Positional distinctions does not translate into different natures, and the Son who now functionally rules the universe (Acts 2:34-36) until He subdues all His enemies and hands the reigns back to the Father (1 Corinthians 15:25) - has the same uniquely divine nature as the Father and the Spirit, and is attested to as being God, as they are, yet composed as One.
New International Version
But I want you to realize that the head of every man is Christ, and the head of the woman is man,[a] and the head of Christ is God.
New International Version
But I want you to realize that the head of every man is Christ, and the head of the woman is man,[a] and the head of Christ is God.