With Vanilla Destiny, I had a single lone hunter. I could barely keep up with one character, and so I never even bothered with the other two classes. And I found myself stuck as a Forever 29 for far too long. In fact I got my last piece of raid gear and finally hit 30 the day before the Dark Below dropped and increased the level cap to 32. And then last night, with just a few weeks to go until TTK, I finally hit another major milestone. Just in time for the grind to start again. But honestly, I am looking forward to it more than I did with any of the previous DLCs. Once more unto the breach...

I'd be at 34, but I'm too lazy to go through all 3 PoE's, especially every week. I'll have to get off my butt though if I wanna beat Skolas.

A lot of the stuff that was owe character is not account wide in taken king, and they have specifically said they want it to be easier to play multiple characters. You should be fine going forward!