I would go to work IMO. No gaurentee of this actually being at all productive. I'd hate to see you waste a day of pay to sit and look at a login screen.I'm probably going to level my necro and dabble in the crafting, otherwise might try my hand at a ranger, unless I don't skip work, then I will miss out on the whole duration of this stress test as I am at work normally 8 til 8 :/
If I can get on when someone else is starting a new character, hopefully get to toy with the engineer a bit. Maybe warrior.
Jess best part of this game is you don't need to be the same level to level together