Guys,
Relacing a wheel is really not very hard at all. I just swapped my 19" for an 18" and laced it up sitting on the floor while watching TV. The key is that the initial installation does not result in tight spokes. I initially screwed the nipples on until the threads were just covered. Once all of the spokes were in place, I put the assembly on the swingarm and slowly tightened all each spoke while periodically spining the wheel to check runout. Remember, we ride dirt bikes, to the wheel doesn't need to be perfect.
Rick