3: I have no idea. That's a very good question. The internets don't seem to know for sure either.
J: 566 feet, as the crow flies. 1,078 feet as the glatt walks (I live behind the grocery store and have to walk around the building to the front door.)
Eggs: as Clodfobble astutely points out, it depends on how hungry I am.

I would enjoy being in the Keys right now. Fond memories of Munson Island.
MUNSON!