I'd play at least 75k to 100k before I move up. 14bb/100 over 10k hands is only 1-4 days/sessions worth of hands depending on how many tables you play and for how long.
As you surely know, you can run super good over 5+ sessions in a row, giving you a possibly false outlook on your actual win rate over 100k hands +.
Pay attention to your all in EV and redlines to get a good idea on if you are actually beating the game for 14bb/100 longterm.