I talked to my Dad about what I had found. He said, "Son, we have to ask ourselves, do we have faith that what the Bible says is true? If archeology conflicts with the Bible, we have to side with the scriptures."
More often than not that bit of advice represents a false bifurcation. In the case of Watchtower's chronology it's not as simple as either we accept the Bible or archaeology because Watchtower's interpretation of biblical text could also be wrong. The 607 notion is based on a biblical statement about 70 years, yet when Watchtower wants it asserts that stated periods (e.g., 70 years) are general and not intended to be precise when in text and context the period is presented as though precise.
You know this already from your research I'm sure, but I see this false piece of reasoning offered all the time to JWs doing the hard work of research so I was compelled once again to keyboard it out.