Your stance is that we currently are in the Millennium which according to Rev. 20, Satan is bound or imprisoned. There are questions that you leave wide open with such a theory.The view I have come to, after much Study and Prayer is that the thousand years mentioned in Revelation 20 is a symbolic number, not a literal description; that the millennium has already begun and is identical with the current church age. I Believe that while Our LORD JESUS' reign during the millennium is spiritual in nature being governed by HIS HOLY SPIRT.
When looking at Rev. 20:1-3 the Bible answers questions itself. Such as, Satan will be bound, incarcerated, imprisoned... which reveals his restrain in doing or operating. It then states that this confinement will keep him from deceiving the nations which later in the chapter describes what he does do once he is loosed. The Word tells us here that there is a specific place where Satan will be imprisoned - the Bottomless Pit.
He can't currently be the power and prince of the air if he is presently imprisoned in another place called Bottomless Pit - they are not one and the same.
A question that begs to be asked is when did this current Millennium begin? At the resurrection of Christ? If so, we are 2000 years removed which means not one but two Millenniums.
Another question: you said above that you believe the Millennium is spiritual in nature etc. What gave you that idea when reading these passages - or what authority by Scripture do you have, to believe or suppose that the Scripture here means something else?
With all due respect, I just don't follow your line of reasoning here.