There are a lot of units in this step (but not nearly as many as in the next couple of steps), so it looks like I’m doing the “easy” steps with fewest number of units first.
I’m halfway through this step, and it looks like I’m going to have two extra pieces. It will probably take me another month or so to get through this part. At least all of the pieces are cut and ready for assembly when I have a few extra moments here and there.