Perhaps Jesus was a doctor or some kind of faith healer (if you'll pardon the pun), that doesn't mean that what he did were miracles in the accepted sense of the word. Like you say he might simply have been ahead of his time or possibly just had a better publicist than the rest of the doctors of that era.
The Resurrection - there are recorded instances of people being pronounced dead but waking up in the morgue and these mistakes occur even with current understanding of medicine and we appear to have already agreed that doctors of 2000 years ago weren't entirely tip-top so I'm quite prepared to believe that mistakes could happen then as well.
I believe that the Romans crucified more than a couple of people so for them to have records of their doing so isn't wholly surprising to me.
I'm not trying to knock your faith, no matter how this may sound, as I've said plenty of times believe in what you want and allow others the same freedom. However what you are offering is merely a form of evidence, it isn't unquestionable proof, you can believe it as proof absolute and I have no issue with it but that doesn't mean everyone else will or even should do the same.