Well saga update: like the conclusion of the "Lord of the Rings" trilogy, this is very slow and has multiple endings (just nowhere near as glamorous or ***-kicky). The drilling is wrapping up today. We stopped at 505 feet. We were able to accelerate the well output to 5 gallons per minute, which is not bad at all - that's 300 gallons per hour, and considering we'll have this DEEP honking well, we should be ok in terms of capacity.
However, since the well was built in the 1970s, an NC inspector has to come back and take photos of the inside of the well. It's a state requirement that was introduced after the well was originally built. Basically, it's to make sure it has no intention of falling in on itself. This is, after all, the mountains.
Once that's done, the well drilling guys can get out of the way and clear the space to the well pump guys so they could re-pipe the pump and drop it back in there. Fingers crossed - we are hoping to have running water by this weekend.