You want more top end speed or bottom end. Take a pick, usually can't have both.
If you want more snap on the take off, go with a 13T clutchbell, some stiff clutch springs and light clutch shoes. That will let the engine rev a bit before the clutch engages. RB style pipes such as the 63 (for lowend) or 86 (for topend) works well on most engines. I don't know if they make another spur gear for the Lightning, but if they have one with more teeth on it that will help give you a little more lowend. For more topend speed you can try a 15T or 16T clutchbell. Mix and match and experiment until you find something you like.
Changing to 30% won't give you a noticeable difference in performance. No matter which percent you run just make sure you don't run it lean.