Yes I agree, Halcon, 1 Cor 11.3 is a good verse. It clearly shows that Jesus is subject to God. If I remember correctly the Greek word “head” can also involve the sense of “foundation”, and some ancient authors took it that way, which would also obviously make sense as God is the origin of Jesus (as creator), Jesus is the origin of man (as the one through whom God created everything), and man is the origin of woman (as woman was taken from the side of man in the Genesis story).
I also agree that we cannot extrapolate from human understanding of personhood and consciousness to say that God can’t do this or that, such as be alone.
JWs also have a particular explanation (I don’t know if others share the same view) for verses that say God finds things out, is disappointed, regrets and so on. They believe that, while God can of course in principle know everything in the future, Jehovah has selectively chosen not to know the outcome of human choices in order to leave room for free will.