The appropriateness of Perpetua would probably depend on the tone of the writing. When I used it, I (half playfully) thought the extra space made the words sort of resonate.
The LSAC's conversion chart is very generous. A 93 as an A? Come on. Besides they also credit A+s and highest passing grades. Going to a school with +s and -s only helps you, because it gives you a chance to get above a 4.00.