Well if you only have IC gears, and things that won't really benifit the TK class, Then by all means, it's best to give it all the DEX that you can, if you don't
have other gears for it. As that means you won't need to spend as many stat point into DEX, inorder to hit.
I've always liked AGI/STR/VIT builds for TK's. It seems to work out quite a bit better then full STR builds.
At your level, Metaling's (One map north of LH) May be good Exp. On that map; Highjump is quite helpful too.
After metalings, Provided that you have enough Hit, Zeonorcs in Orc dungeon 2 might be a good target.
Either that, or Myst cases in Toyfactory level 2.