I am currently at 47 % on the rear with a 106 wheelbase. I know the 30 inchers are way too short, but I am below the neutral line at 5 1/2 inches off the ground. So, I am considering going to a fourlink but not right away.
Ok, 47% on the back is actually pretty good for your power to weight ratio. I'm a bit surprised you needed to move some weight forward. But, with your short IC I'm not surprised it helped...just a little surprised it needed it.