Yes. No. No. No. No. Yes.
YES (because the book was horse-traded for Hebrews. Yes, the book that is never read publicly in Eastern Churches)
YES (the book was badly needed to redefine what "soon" meant)
YES (the book is nothing like anything in the New Testament and, it wasn't written by John the Apostle)
NO (because you offer no proof, just a quote from a book. You have no proof that the book is anything more than just a book)