Previously we've done 5 weeks out test 3 rep max. Calculate 100% from there. Then usually openers are 88-92% of that number depending speed and how you feel over the next 3 weeks working up to your 100 or 102.5% depending on feel that last session. Then a week off, then compete.
This time we're training into the meet since that's usually when everyone feels their best.
We've tried a few other approaches so we'll see how this works. I like the above where you determine a 100% a few weeks before, then you hit various %s over the next few weeks then depending on how everything felt you hit up 88-92% for opener 92-96% for 2nd then 98-102.5 for third. Making adjustments on meet day as needed.