1) the entrance of Jesus into our history (I won't deal with the fringe position of Jesus not being a real person),
Nevertheless, it's a valid position since Jesus' existence is not a confirmed fact. But apart from that, to play devil's advocate, people have been claiming ghosts throughout history, so this isn't anything special about Jesus.
2) the existence of written documents of people that knew Jesus or knew people who knew him,
None of these documents are verified as "people who knew him", or from "people who knew people who knew him". You're just granting yourself this luxury, but it's not confirmed that any of the writers of the NT actually knew him.
Meanwhile, people up to this day can cite having ghost experiences, or "know people who have had ghosts experiences" -- so that neutralizes this one as a special claim of Christians.
3) the volume and reliability of these documents,
Can you please support this? First, what "volume"? The New Testament, and some scant references peppered in other docs, many of them likely to be later insertions? Second, do you have original manuscripts that will help confirm the authenticity of the versions we have much, much later, and can you verify they have not been changed in any manner?
Finally, the volumes of testimony for ghosts appear up til the present day, and many of the claimants seem fairly reliable. Hell, there are even pictures in some instances-- we don't see many of those exposing Jesus, do we?
4) the birth and continued existence of the church that his disciples established,
Ah, so you are then perfectly comfortable with being a Mormon. The church that Joseph Smith birthed and its continued existence and in fact fairly rapid growth. So, you're a Mormon? No? Well, what about a Muslim? Muhammad also established a church and it continues to this day. In fact, its strength seems to be on the rise.
So, we're agreed Mormonism and Islam are true because they have been around for awhile, and have continued to this day. Cheer up Scientologists-- your day is a mere few hundred years away!
5) the way the disciples would not deny Christ even upon pain of terrible death (and this is NOT the same as martyrs of today - the apostles KNEW Jesus first-hand and KNEW if they were telling the truth or not),
Ah, so David Koresh and his followers were clearly embracing the truth, since they faces horrible death, and did not repudiate their beliefs.
6) the way that the Jesus writings work in my life, and
Uh-- what writings of Jesus is that? Jesus wrote nothing; unless you refer to those "reliable volumes" you seem to be in sole possession of. And exactly what is special about Jesus' philosophy as recorded by unknown authors 60 some years after his alleged death. All of it can be found across a wide variety of other religions, predating Christianity by hundreds of years.
But many people also take solace in the writings of those who proclaim ghosts,because it propels them to bleieve in an afterlife. So nothing special there either.
7) the way I sense God in my life.
Ah, "Because I feel it." That's one I've never seen before-- no other religion claims this, do they? And of course, people who would believe in ghosts "because they feel it" aren't to be taken seriously at all, are they? Only theists deserve that privilege, is that what you're saying?