You may not realize this but this was what I meant by reading back into scripture a modern understanding that simply was not there from the beginning. You could do this with anything, finding comparisons and correlations, such as reading all this back into Homer's Odyssey or the plays of William Shakespeare. Though it could be useful by way of speaking in symbolic language, it simply is not there, literally, in what was written or intended to be written. It's just good to be careful to not say it "is" there, meaning it was intentionally put there, hidden as it were by God through the unwitting participation of the authors, encoding special meaning to be discovered by moderns in America 3000 years in future.
That is magical thinking.
As far as the comparisons between Adam and Eve and serpent with the conscious, subconscious and unconscious, there are problems with the analogy. For one the "ego" is not part of the unconscious. It's part of the conscious mind. It's what we think about ourselves and how we consciousnessly self-identify. You can be somebody else in a dream. And when you are in dreamless sleep there is no self-identification at all. The ego is simply those conscious objects we self-identify with, and that changes and grows over time in our stages of development.
Why Satan is identified with unconscious is a bit bewildering as well. Satan in reality as a symbol points to that which resists LIght. In the unconscious we are dealing with all manner of things that have been programmed into us that are not near the surface of the conscious mind, or the subconscious mind. These deal with instincts, desires, beliefs, linguistic structures, patterns of thought, and so forth. There are neither necessarily for God or against God.
As far as Adam "knowing" Eve, yes that is sex and not a metaphor for anything else. The term "knowing" was used throughout the OT to mean sex and never meant anything as elaborate as the conscious and the subconscious penetrating each other. They didn't even have any such understanding of the mind like this, nor tried to speak of it in metaphors. Once again, this is a reading back into scripture a modern understanding.
Where is knowledge, in the brain, you ask? I don't know. There are plenty of animals that have a knowledge of what to do the second they are born who don't have any brains at all. Where is their knowledge stored? Do we really know these things definitively? I tend to think the universe is a bit stranger than we imagine as we like to localize things, that DNA alone is responsible for everything. I keep an open mind on these things.
As for the rest about the 12 tribes and all that, I just think that's just more of the same. The problem with this is it that if that is what was meant, what was intended to be understood at some point in the future when we came to have scientific knowledge, then when that scientific knowledge changes and we no longer understand things the way we do today, then you make God include a scientific mistake in the Bible, proactively!
It's really better not to set yourself or God up looking for hidden meanings in things. Too easy to tip God over this way.
In meditation you are accessing both the subconscious and the unconscious mind, as well as the "collective unconscious" as well as Ground Emptiness, and so forth. There's quite a lot that happens in meditation. Again though, I don't believe the Bible contains the secrets of neuroscience hidden in its pages!
That is reading back finding loose correlations and making a mythology out of it misusing symbolism to mean secret knowledge.