David,
Not only did you time it, but how much each task took. Very useful and will provide a good benchmark to others, with the following caveats
-Only cut a part off the etch when you need it, especially if it's small!
-RTFM (Read the f&&%^ing manual), it's there for a reason
-measure twice, cut once
-take your time and enjoy it. The build is the journey, and as much fun as the destination.
I timed my six wheel coach construction at c.8 hours without painting, but an instruction error (since corrected) made up an hour of this...
The Bredin Mailcoach took c.17 hours before painting, not helped by losing and having to redesign a door hinge or two (don't cut til you need it eh)