Thanks for spelling out your views and for telling about your ex-JW background. Does something this deep belong over on the "Bible Study" forum? (It would stay closer to the "top" longer over there.)
Although I can no longer subscribe to all WTS dogma, I still believe no Trinity exists. Part of the problem is that the views of the Trinitarian believers vary so widely, almost from person to person. Some emphasize the "duality" of Father and Son, as you seem to, leaving the holy spirit out. Other Trinitarians would disagree with you and say "The Son = The Father" in terms of where one appears in the scripture, you can easily substitute the other. Really just one personality.
My other problem is that you have to go far beyond the realm of the Bible into either intuition (which most Trinitarians use) or into terribly uncommon and sophisticated ideas such as scientific "string theories" and Einsteinin propositions.
I won't answer point by point because this isn't the Bible Study forum. But I'll focus on objections 1, 2 and 11 and perhaps leave others for another day.
In your answer to objections 1 and 2, you clearly conceded that the Son's "Office" is different than his Father's. When I approach the Father in prayer through his Son, that difference in their "offices" is helpful in clarifying things for me. It would not help me to know that they are co-equal, co-existent or anything else. If one is subject to the other, like a wife to a husband, that tells me which one of the two is directing things/making final decisions, and who else I can get help from (or serve, to view things less selfishly).
Regarding objection #11 and John 20:17 ("Jesus called his Father his God.") You fell prey here to a tactic that Trinitarians often seem to use, that is you quote them one scripture, and they jump to several others that they want to fall back on. John 20:17 is helpful, because it helps me understand that Jesus has a God just like I do. Sorry if it sounds too simple-minded, but sometimes the most profound truths are the simplest ones!
I'm not trying to get involved in a lengthy theological debate. I think we both believe the same basic things about Christ's love, salvation, etc. And I'm happy that you are open enough to post your views. I don't share all of them, but it's great we can still get along in this forum!
Thanks for listening.