Your doctrine teaches that Christ returned in the clouds in AD 70, and that we are now living in the Millennium. Being how the book Revelation was written in about 95 AD and not before 70 AD, I don't how the prophecy Revelation could of already happened before it was even written. Preterism is a teaching that is filled with doctrinal error.
There is strong INTERNAL evidence that Revelation was written before AD 63. See Kenneth Gentry's books, for example. Granted, there are "fool" preterists who deny "the resurrection of the body, and life everlasting, Amen." David Chilton adopted that position after quadruple bypass surgery. But there are many orthodox preterists who insist on Christian orthodoxy, who anticipate a literal bodily return of Jesus, and bodily resurrection.