Alpha sheets can now be added to games via the edit option in the alpha sheet display. In addition, statblock embedding should also work for the [sb=show][/sb] tags. Any problems, please post in experimental features with links to the sheet and the game.
Your numbers don't matter that much. No need to memorize them. They'll use that instead of your name for pretty much everything. When they do use your name, it'll probably be in a formal situation, so I would recommend you using your "real" name. I'm going to assume everyone used their real name unless anyone says differently.