Gotta be a chart someplace that shows the effect of the spoilers for certain weights and max anti-skid braking.
Remember that your braking force is better when heavy than when light. So until you hit the brake energy limts, you can mash the pedals and take what you get. I must caution all that the best way to avoid heating and destroying the brakes is to slow down a bit, then mash them. Rule of thumb is half the brake energy for a one-third reduction in speed. This was a big problem in the early days for our little jet, and constantly tapping the brakes at a slow speed heated up the brakes less than "riding " them at a higher taxi speed.