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.
Oh don't worry, you could definitely make fun of me for the name "berntie". I wanted something anonymous so I named myself after my hamster Bernie Tiergan (yes I had a hamster and yes he had a last name). He's dead now. :-(
SCAP- you know I'm just joking about you being slow, you're obviously smarter than me. As for my hamster- he was alive when I picked the name, but he died on Valentine's Day. I'm not allowed to have big animals in my apartment, so I loved him like he was a very miniature dog. He was probably the best hamster ever- if you knew him I'm sure you'd understand.