If flesh and blood cannot enter the kingdom, then only saints in glorified bodies make up the millennium. So, Satan rallies Gog and Magog from among the saints in glorified bodies to fight against the rest of the saints in glorified bodies according to your scheme. This alone should send you looking for a new theory.
Wow, do you not know there is a difference between heaven and earth?
The kingdom of heaven is that of heaven.
Do you not know the Lord prayed "THY Kingdom come..." Why would such a statement be made about the will on earth being done EXACTLY as it is done in heaven, if such were not yet a promise to be fulfilled.
The millennial reign is that of the promised earthly reign given to the ancients of old.
This is basic understanding of Scriptures, yet you seem to stumble looking for something other than the factual and physical realization of the millennial reign.
Just as the people of Noah didn't understand, the Lord said, the folks of the last days would be given a strong delusion that they not understand, too.
Where did you get the thinking that only saints in glorified bodies enter the millennium. There is not a single Scripture to support such thinking as revealed in the prophets nor the Apostles, much less the Lord Jesus Christ.
In particular such isn't what is revealed in the last 5 chapters of the Revelation.