If you are thinking of launching at Pycon, what do you think of the idea of playing some music - you’re a guitarist right? Maybe there could be “The Mailmen” - a Mailman band - if you can rope in some other musicians. Perhaps the song could be a play on Elton John’s “Rocket Man”.
A bit of marketing theatre for the bloggers to post a Youtube video of. Would help to get the word out there about the launch.