Let's start with a question. Is it possible that the NT authors assumed that Jesus was of the House of David based on their prior belief that Jesus was the Messiah ?
I would say that the answer is yes. Luke and Matthew both give genealogies of Joseph, linking him to the House of David. But they are different - they can't both be right. So we certainly can't be sure that they had solid information. And what do inerrantists say about this ? They usually try to argue that the genealogy in Luke is really Mary's. But there is no real basis for this other than the assumption that both genealogies must "somehow" be correct. If modern believers think like that then how can we assume that the athors of the Gospels did not ?
And we can go on. Was Jesus born in Bethlehem ? Luke and Matthew again offer stories - but those stories are very different. Matthew has Joseph and Mary living in Bethlehem and moving to Nazareth after their return to Egypt since they did not want to live under the rule of Herod's son Archeleus. Luke has Joseph and Mary living in Nazareth, but visiting Bethelehem to register in a Roman tax census - a census held after the Romans deposed Archeleus.
SO it is not so far fetched to say that some of the "fulfilments" may be inventions - although we cannot be sure that they were made up by the gospel authors. Even today we can find urban legends cirulating among christians and being mistaken for facts. Of course these days it is easier to check up on the facts but even a story with obvious problems can be circulated - even when many fundamentalists publically state that it is false.
Have NASA computers really proven Joshua's long day? - ChristianAnswers.NetNASA Discovers a 'Lost Day' in Time? | Snopes.comAnd just to show that it is still being propagated:
http://www.geocities.com/guysworldtx/proof.html
But there are other ways prophecies can be fulfilled.
Riding into Jerusalem on a donkey ? Well that's easy - Jesus could simply have done it to fulfill the prophecy.
Or unrelated stories - or even poetry - could be reinterpreted.
Look at all your references - how many verses do you refer to from Psalms which are not given as any sort of prediction ? Or Zechariah which his symbolic of Zechariah's own times ? As for Daniel 9 it is well known that it refers to events 200 years earlier ! There are real problems that have to be addressed before you can claim successful prophecy.