True enough. the Gospels don't claim to tell us everything, and they are passed down memories written down later But they are the only record we have of Jesus, his actions, and his words.

And the gospels records have Jesus saying rather explicitly that he was 'Son of God' and that he was calling God his Father in a very special way, though he taught us to call God 'our father' (Abba), as well.

I find it difficult to understand where you find any basis for your claim that 'Jesus never said he was son of God'. It's there in the Gospels over and over again that he said exactly that, and that the Gospel authors understood him to be saying that.

If you  don't want to accept what the Gospels say, that's up to you. But they are the only record we have -- incomplete as they my be -- for the words and actions of Jesus. 

The rest of your opinion is merely your opinion. Prove it.