Quick Summary 1

Revelation (and all NT scripture) was written before 70 AD because none of it records the destruction of the temple, which you'd think would be a pretty big news item as it represented the end of the "old testament" world.

Irenaeus is the only guy who dated Revelation at 95, but he also wrote that Jesus was over fifty when he died, so I wouldn't take him as an accurate source of information this important.

"Coming on clouds" is old testament lingo for judgement, not a literal aerial arrival. So shortly before 70 AD John writes Revelation, he talks about the judgement of apostate Isreal and Rome, Nero is 666, the temple is destroyed, eventually Rome falls, and since then the last (fifth) empire governed by Christ begins to grow slowly as small stone and continues to grow even to this day

Dan 2:32	"The head of that statue {was made} of fine gold, its breast and its arms of silver, its belly and its thighs of bronze,
Dan 2:33	its legs of iron, its feet partly of iron and partly of clay.
Dan 2:34	"You continued looking until a stone was cut out without hands, and it struck the statue on its feet of iron and clay and crushed them.
Dan 2:35	"Then the iron, the clay, the bronze, the silver and the gold were crushed all at the same time and became like chaff from the summer threshing floors; and the wind carried them away so that not a trace of them was found. But the stone that struck the statue became a great mountain and filled the whole earth.