The house is now closed up. All windows on the north side were installed last week after the drywall was stocked in the new spaces. The shower plumbing has been installed. It appears we finally bought the correct fixtures after several encounters, and false starts, with Lowe's. The electrician has put in the recessed fixtures in the front room, as well as the boxes for the lights that will light the driveway. In addition, the skylight in the front bathroom has been installed, turning The Cave into a well-lit space.
Next week the wall dividing the dining area will go, after a temporary wall covered with heavy gauge plastic is installed. The insulation will be installed and then it's on to the drywall, which Myron says will take about three weeks.

Despite the wild weather (18" of snow and then 3-4" of rain for days in a row), the siding on the west and south sides of the house is done, except for the dining addition, which is currently being worked on. Most of the wiring has been completed, including all of the new construction and the light fixtures in the bedrooms. The wires have also been pulled for the new fixtures in the living room. Next week the drywallers will be coming to "stock" the new construction. After that occurs, the final framing for the windows in the bedroom, office and dining area will be done and the windows will be installed. Insulation will go in and then those areas will receive heat for the first time.

The wall between Russell's old room and the new construction is gone, defining the entirety of the master bedroom and bath. The new doorway has been framed and the door has been installed. Russell's old window has been moved to its new location and the new wall that makes Zoe's room 18" wider has been framed. The siding on the south wall is complete.
Russell and Zoe are now living downstairs and the majority of the furniture will be packed and stored by mid-January.
We are still trying to figure out what to do with the shower. The custom pan idea is out of reach financially, but with a bit of downsizing and a preformed pan, we should be able to have pretty much what we want.