I would BR on all four sections. When you take the real exam, you will not know which section is scored vs. experimental.
I believe you just BR three sections instead of four neglects your efforts to make sure you perform and review your best in th…
If your score is already 5 points higher than the 75% percentile then I would not retake the LSAT. I would focus on building a strong and competitive application and submit it early as you can.