I have never read such a mish-mash. Tertulian and other early church writers knew that the ten horns were future in their day, they would overthrow the empire,(which they later did) and would be followed by antichrist who they mistakenly thought would be an individual, ruling 3½ years. Then would come the end of all things.
Tertulian also taught that the temple in Rev referred to the church and the 144,000 were Christian virgins.
You are well out on the ten horns as at John's time they had not received their kingdom.
- Revelation 17: 11 And the beast that was, and is not, even he is the eighth, and is of the seven, and goeth into perdition.
- 12 And the ten horns which thou sawest are ten kings, which have received no kingdom as yet; but receive power as kings one hour with the beast.
The little horn came out of the ten horns so must also have been future.
- Revelation 12:3 And there appeared another wonder in heaven; and behold a great red dragon, having seven heads and ten horns, and seven crowns upon his heads.
The seven heads were also seven mountains and seven kings. That represented the whole Roman economy until it was overthrown by
ten gothic kingdoms in the 5th Century. In the above scripture we are told what time it referred to, the time when the seven heads were ruling. In the next chapter we are told that it is after the fall of the empire when the seven horns were ruling.
- Revelation 13:1 And I stood upon the sand of the sea, and saw a beast rise up out of the sea, having seven heads and ten horns, and upon his horns ten crowns, and upon his heads the name of blasphemy.