Drywall (click images for a larger version)

We started in the kitchen, running the 1/2" thick 4x8 sheets
horizontally, using 1 1/4" course thread drywall screws. Usually
you run the ceiling drywall first, but we don't know if we are going
to run drywall on the loft ceilings.
The area left uncovered here is where the A/C and D/C
breaker boxes will go. Also a bunch of our solar equipment will be
mounted here, so this area will probably get an access panel of some
kind.

The rest of the north wall.
Cutting around the outlets
was done with a Dewalt cordless drywall cut-out tool. It's like a
large angry Dremel tool or die grinder. We marked the outlet box's
center, positioned the drywall and partially screwed it in. We
ran the cut-out tool from our center mark outwards until we hit the
box edge. Then we pulled the tool out, moved over 1/8"
or so, plunged it back in and then traced the outside of the box.
This was a bit touchy with our boxes being plastic. The tool's bit
gets very hot and can melt right through the box.
The window openings were also done with the cut-out
tool once the drywall panel was fully screwed down.