Cal Metzger: VR: "It depends on what kind of explanation is needed for the factual information."
It would seem to me that the kind of explanation needed is that the stories were compiled by men who lived in the time and setting in which they wrote. I think that explains things best.
VR: "In the case of the Book of Acts, the author had extensive knowledge of lots and lots of facts concerning locations all over the Empire, from Jerusalem to Rome."
So what? Wouldn't we expect that from literate men who lived in the time and setting in which they wrote? This seems like one of the the most mundane "problems" I can imagine.
VR: "Putting that much accurate detail in an ancient document which also contains a significant amount of supernatural content cries out for explanation."
I can imagine few things less surprising in a document written by religious proselytizers. Truly, this is one of the least remarkable features of the NT.
VR: "The technique of the modern realistic historical novel was not known in that time."
By this logic no literary genre could ever emerge. Cervantes couldn't have written the first novel because the first novel wasn't known at that time. Capote couldn't have written In Cold Blood because non-fiction novels weren't known at that time. Etc.
Also, if you were going to be consistent you should find this equally persuasive (from a Muslim who believes in his book the same way you believe in yours): "When we study the Quran even superficially from the viewpoint of its wording, styles, and meaning, we will certainly conclude that it is completely different from all the other books in the world. So, in rank and worth it is either below all of them-even Satan cannot claim this, nor does he conceive of it-or above them. Since it is above all of them, it must be the Word of God."
Notice how the above paragraph relies on 1) fuzzy and arbitrary standards ("completely different") and 2) flights of logic ("Since it is above all of them, it must be the Word of God.")
Then notice how your words above rely on 1) fuzzy and arbitrary standards ("the amount of factual data") and 2) flights of logic ("It is evidence, and I am tempted to say, it's extraordinary evidence.")
And that is why you are inconsistent, and that is what the OTF reveals. Because the method, the process, the way that you say you are selecting and evaluating your evidence, if applied consistently, should compel you to accept other, competing religious claims (like the common argument for the divine writing of the Koran, based on it's literary qualities and concordance with mundane facts known to the writers of the time).
I assume that you're being honest, and that you can't see how obvious the above is to those of us who see how all religions are similar. So your situation is like that of a man who has a sign pinned to his back. How many people have to point out that you have a sign pinned to your back, and describe it to you in the same, exact detail whenever you ask, in order for you to accept that you have a sign pinned to your back?
VR: I think you are the one who is missing the point. Look once again the the detailed list posted by Jayman, based on Colin Hemer, and simply ask yourself how he could have known all he needed to know in order to write Acts.