I never put the wings on my -8 until i moved it to the airport, about two months before first flight. When I did mount them, I had to take them off twice in the same day to do a little fiddling with the lower wing/fuse fairing - as long as you put them on with ground-down hardware-store bolts/drift pins, and don't use the close-tolerance bolts until you're putting them on "for good", removing them is not a big deal at all.
Paul