Unfortunately, much of this is irrelevant. (1)Hope (and you to an extent) makes the mistake of assuming that the early Christians were keen to keep the historical story accurate, (2)but what evidence we have shows this is not the case.
What evidence do you have for the truth of either of the claims in this post, Jeremy? I have regularly stated that the historical (chronological) order of events wasn't something that the Gospel writers were concerned with, preferring rather to illustrate their message by reference to events that took place. It is also likely that Jesus did the same type of miracle and teaching combo on more than one occasion over his 3 year ministry, so that slightly different locations or numbers or other details don't necessarily mean that they aren't legitimate records. What evidence do you have that this isn't the case?
Paul is the only early Christian writer we have left ...
So you dismiss the generally accepted dating of Mark's Gospel as between 60-70 AD - a period that also includes Paul's possible letter to the Colossins (scholars are split 50-50 over hether he authored this)
... and he insists that his gospel comes from revelation, not oral transmission. Paul met Peter and James but never once does he back up any of his own teachings by claiming they were passed on to him by Peter or James.
So, ... do you think that the meeting they had (iirc they had 2 different ones if you look at the various documents) made no mention of Peter and James' experiences with Jesus.
Paul's writing shows that he sets no store by the historical accounts that might have existed as opposed to his revelation and by extension neither does his audience — the early church.
But Paul's audience was, to an extent, different to that of Matthew, Mark and John at least. Luke, as someone explicitly writing for a Greco-Roman audience, probably had, at least in part, a similar audience to Paul. Furthermore, some of Paul's audience would have already heard the Gospel from another source before Paul arrived on the scene, and even those who hadn't he spoke to long before writing to them. His purpose therefore, wasn't to go over the historical events that make up the Gospels again, but to take his audiences' existing knowledge of these and apply the lessons Jesus drew out of them to his audiences' lives. Not a single word of the Pauline epistles 'set no store by the historical accounts'; rather, they built on them.