That's plenty of pad for a 2 day event. The 3/4 pad requirement is SCCA. You won't really need that much, and they won't send you home because of it. If you have only 1/4 left, the track inspector might say you should keep on eye on it.
The 1/2 pad requirement sounds like BMWCCA. They're not as easy-going as SCCA, but I'm pretty sure you could do an SCCA event and still have enough pad left to pass BMW club inspection.
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