In general, I agree with all of this, although I don't believe that it's rational to think that Adam was a real person as the first human being, so it's nonsensical to talk about what happened to his body, soul and spirit when he died--you might as well ask the same questions about Forrest Gump.
I don't think of spirit as being owned by us, the way a person owns a house; more like it's being rented from God. God provides the life force that makes inanimate matter alive (for all living things), and he breathed it into Adam, but it's always really just an impersonal manifestation of God that returns to its source upon the death of the body.
But yes, when you're dead, you're dead, until the resurrection.
If Adam was Not the first human, then who was__________
In Scripture, a Forrest Gump would not be a real person, but does that have to mean Adam was Not a real person.
Yes, God breathed the breath of life into a lifeless Adam.
In other words, life-less Adam did Not come to life before God breathed the 'breath of life' into life-less Adam.
Yes, one's spirit is impersonal just as God's spirit is impersonal neuter "it" according to Scripture.
So, the unconscious dead are dead asleep until Resurrection Day aka the coming 1,000-year rule by Christ.
Christ Jesus being the ' last Adam ' meaning Jesus as Messiah balanced the Scales of Justice for us.
Both Adam and Jesus had the same non-human to father them.
Both started with the same perfect human health being of sound heart, mind and body.
Both had the same choice to either obey God or disobey God.
Unlike Adam, Jesus chose to obey and be faithful to God.
Even in our imperfect state we are all free to be responsible toward God.
Thus, like both Job and Jesus, even under present adverse conditions, we can be faithful in obeying God.
Our faithfulness, our obedience, proves Satan is a liar that No one would serve God under adverse conditions.