RAF'inf AND doing professions I got 1-60 in about /22 hours played.

I'm currently leveling my Paladin team without RAF and while it's been much longer of course, I've enjoyed it anyway, since the Random Dungeon Finder means I've been able to skip all collection quests.

Without doing professions I've got no doubt that /16 hours or even possibly /12 would be doable as others have said.

As to Reddewman,

Make sure you're not taking them through an instance that's too high for them. Also, instance boosting with an 80 only works well if the 80 goes REAL quick, like 10 minutes a run max quick.

At 17, I'd be doing WC....moving to SFK around 20, before switching to the first SM wing (GY) around 24.