I played a halfling rogue/shadowdancer all the way to 14th level. She was great!
It took about 1.5 years, playing once a week about 3-4 hours a session.
In fact, that's the highest level character I've EVER played, let alone from first level. And I've been playing over 20 years. Seems we always got tired of the campaign/characters around 8-10th level in 1st/2nd edition games. Also, in the last 15 years, I've almost always been the DM.
Gilladian