Briggs Blue Slide - Advice on Tuning?

Any advice on the following with the blue slide (Canada Junior Lite). We’re introducing it this year in our club in the west:

  1. What color spring combo to use on the Hilliard Flame?
  2. Is there generally any advantage to hit the rev limiter, or do we want to be under the limiter (like with the red slide, where you normally target 5800-5900 rpm)?