You've stated in your last Pro and Con this info:
"I think Noah started loading the Ark on Cheshvan 10, and the Lord shut the door on the 17th. If I remember right, Methuselah died on Cheshvan 10, so Ariel Sharon just might die on that date."
Simple math from Genesis 5 numbers places Methuselah dying in 1656, the year of The Flood.
I'm wondering where you got your specific death date for Methuselah of Cheshvan 10?