That well will run dry quickly too, unless I do some delayed financing tricks or something.

If it's cool and dry when you install tight you'll be seeing buckling when it's warm and damp.

No sense trying to stay dry after you have already jumped in the pool. 

We hoped to save dry wall, but under the piles of stuff was mildew that softened the walls/ceilings.

Have you looked into short term rentals such as airbnb since you mention renting seems to be dry as well?

Dry cut creates A LOT of dust.

Advertise off-grid dry cabin for rent.  

The cheap plastic connections work best in dry areas, i.e. there won't be any standing water.

---------------------------The house, as you say, has been relying on HVAC for overcoming no insulation and vapor intrusion (although, for the vapor part of the equation, the HVAC may not be contributing much to dry-out depending on wall covering or paint type.) 

I washed it with TSP and water and let it dry, and then I used the "bright white" Sherwin-Williams base paint, with no tint in it whatsoever.