How are you going to mount the skid plate to the bike? I used a steel frame from the rear engine mounting location to the 10mm through-hole at the bottom-front of the engine. The steel frame doubles as the mounting point for the pegs and bottom of the vertical radiators.
Currently I am not working on that bike but doing some composite experiments for the LC8 instead. That does fit in the big SV-picture though; I am trying to gain enough experience with composite to be able to replace the entire subframe with a composite fuel tank. Battery and regulator will be moved to the skidplate under the engine, and when they are gone the rear of the bike only has to carry me and the tail light. So that's why I think I can leave the classic subframe for what it is and replace it with just a tank.