Congrats on the build, Seaweb, it looks fantastic!
We all have different methods and build techniques, and yours seems to be very similar to our swedish methods.
One thing seems to differ though.
Over here the concrete slab would have been poured and completely finished with drains, hoses for underfloor heating, etc, before anything else was done.
The reason is twofold: 1. Easy access when pouring the slab with no walls or roof in the way, and 2. a nice work surface to continue the framing work on.
Is there a reason for saving the pouring of the slab until after the framing and roof is done?
Cheers and keep up the good work, can´t wait to see the finished product!
Dan