That's what I'd have said, too. So long as the arrow does not pull off the rest when you draw and anchor it's long enough. That being said I like to keep mine at least an inch past the rest just to give me some room to play with the bow's draw length. A little long can never hurt and 1/4" to 1/2" extra isn't enough to upset the spine of the arrow so much as to throw off the tune should you change the bow's draw length or go to a slightly different weight point.
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