Hauled ass over the weekend front-loading a lot of my electrician's work. He was only able to come on Tuesday, and the PSNH guys were due for the HeatSmart inspection and meter install at 1:00, with the town inspector at 3:00. So my weekend and Monday were spent moving the sub-panel, tacking wires, etc.
I gotta say, SER wire is a real pain in the ass to work with. The one nice trick I learned from my electrician is to use PVC conduit clamps to hang the big wire. The clamps screw in rather than nail, and I find it a lot easier especially when the space it tight and you are trying to figure out how to make two hands do the work of four. All while the SER wire is desperately trying to do whatever the hell it wants to.
The final subpanel wiring:

I left him lots of conduit work in the final termination of the branch circuits:
HeatSmart Meter (top) installed with DCU unit alongside:

Reinsulating under the 1st floor, there was only loosely-hung R-11, I've packed 9" R-30 into the areas where the ducting will go, and will finish up the rest at my leisure after the Geo project is finished:

First day of ductwork. I'm getting three zones (basement, 1st floor, 2nd floor) whereas I only had one before. Left to right is 2nd floor, 1st floor, basement, return:

The return ductwork is more involved now. The Air Handler is offset to the right of where it used to be. The first bend goes to the first cluster of returns at the north side of the house. You can see it branch down immediately, which then shoots over to the main trunk runs (see previous photo) where it will catch the basement returns and the return cluster in the middle of the house:
