As Dps there is no good reason why you cant Run CT as soon as you are able to get in via the Duty Finder, since its raid level content you dont need incredible dps or to be incredibly well geared to survive it, and since it rewards 200 / 50 tomes per run its a pretty fast way of gearing a toon, unless you get a run full of complete idiots. like someone else mentioned a lot of people even run it in soulbinding lvl 55 gear and / or Crafting accessories (myself included) In all but one fight there are 11 other Dps there, more than enough to pick up the slack for a fresh 50