all true points. However most of the theology of the rapture and millennium is found in the OT prophets not Revelation.
Interestingly the book of Revelation cites the OT more than any other NT book. The vast majority of the verses, if not a direct quote, are a clear reference to OT scripture. You don't have to subscribe to G.K. Beale's eschatology to appreciate in his commentary on Revelation the exhaustive study of OT references in the book of Revelation. If you are not solid in your study of the OT you cannot come close to exegeting Revelation.