You've made a lot of points, but they all come back to, But the Bible says... Keep that in mind as I respond to them individually.
-Luke 1:1-4 suggests that historical methods of some kind were used, yet the narrative of Luke is hardly different than Matthew or Mark, suggesting the author is just repeating what he or she learned. I would point you to Alfred Loisy's Origins of the New Testament for a detailed look at these prologues and how they've been tampered with (http://www.earlychristianwritings.com/loisy2/chapter6.html).
-Josephus did not write about Jesus, a later Christian copying his work added in a section about Jesus. The section about Jesus breaks the context and sounds like a Christian and not a Jew. The other sources you've mentioned are 2nd century sources who may only be responding to or repeating Christian claims. They are not necessarily independent sources, and even if they were, they're too late to have witnessed the supposed crucifixion.
-Your following questions ("What would...") are just you repeating or paraphrasing what the Bible says. I'll show you what I mean:
How could this new belief (about Jesus Resurrection) take hold right in the city where everyone saw Jesus die? It was to Pilates' and the Pharisee's' advantage to produce a body to stamp out this hysteria surrounding Jesus. But none was ever found.
What you mean is this: But The Gospel of Matthew says Jesus' body was not in the tomb, and says everyone watched him die, and says...
Yeah I know it does, I don't believe The Gospel of Matthew. There's no good evidence for the tomb itself in the 1st century CE, much less that tomb having something to do with Jesus' claims. Prove to me that a body was deposited in a specific tomb in Jerusalem in 33CE and then was found missing, and don't use the Bible. Good luck.