Well, as it turns out closer inspection and studying of the plans reveals that there's not as much wing sheeting as I thought...in fact, what's "left" is about what I was thinking of covering ANYway.

I am still curious, however, for future reference, how much structural strength 1/16" wing sheeting provides to a symetrical wing.
In the mean time, here's this afternoon's progress. Did, in fact, get the LE and TE stock put on. Figured out a bit too late that I'd used the wrong piece of balsa for the LE. Not a big deal, since it'll be getting sanded down to shape anyway, so it just means more sanding and a trip to the LHS to replace that piece (which is called for in the LE of the ailerons)
In the mean time, the frame is really starting to look like a wing, I think. I'm VERY proud of how straight it is. Each rib had 2 holes drilled into it (for servo wires), and they were clearly all drilled as one hole through the stack. Knowing this, I felt that if the wing was straight and true, I should be able to look through the holes from one end to the other and, in essence, see only 'one hole'. Well, I CAN!
Not sure as I said before if I'll try to sheet the wings tonight or not. S'pose it depends on how entertaining the HRD is.