To put it lightly... yeah it is. I've hesitated on resuming this build due to the daunting task of laying out the rivet lines but now that I've done the one wing, I am committed!
Yeah but it isn't as bad as one would think. Before I started, I was under the impression that I had to use a straight edge or Dymo tape to guide every rivet run, in addition to taping up the areas at the start and end of each run to protect from inadvertent rivets. But it's pretty easy to run straight lines on the rivet tool without a straight edge. I also got a knack of where the rivets were starting and ending so in the end, I was just free wheeling that rivet tool around without any guides except the pencil lines.