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.
I am a graduating senior at the moment but will have one year of work experience by the time I apply. I already have one Professor lined up and hopefully a Judge who I worked for and who knows me well. I can get a third non-academic without a problem, but I am worried that another professor would end up being vanilla. Am I kissing my chances at Harvard/T14 goodbye if I only send in the one Prof. rec.?