What you offer there is mostly man conceived, not as he is described in the word of God.
Yes I believe that Yeshua is the only ‘begotten’ son of the Father. He said that they are one, and I believe him.
The Word of God says nothing of his substance, so we cannot go there authoritatively. We know from the Word that without the son was nothing made that was made. That is enough for me to know on that subject.
Of course, your "man conceived" beliefs are right. Isn't that pretty much it?
Ever wonder why the Great Commission did not say: "Go into all the world and hand out Bibles"?