I understand that there are a lot of writings about when the different gospels, epistles, etcetera were written. Fundamentally I presume God to be the author of all of these different writings, and that He somehow guided people's hands in assembling these books together into the Bible - so I'm not too hung up as to what got written when ... except I'm right.
OK, I wasn't there - but most people take the Letter to the Hebrews as having been written by Paul, and he was martyred in the 60ish AD timeframe. The epistles of John? No, I can't prove they were written prior to the Book of Revelations - but I presume they were.
Anyways, I agree with you on your points - there are references that dispute when the different epistles/books were written - but I believe the strongest evidence points at Revelations being the last book written.
Be well.
Regarding hebrews... I support the barnabas authorship... not for sure... Hebrews has always been my favorite book... the temple WAS still standing. Whethe rev has the earlier date or the later one, benny hinn was not authorized to add to it... I don't think BH is an apostle... but we do have a lot of apostates running around... with offering plates these days.
I would rather send you my money than them.
YOU BE WELL.