Thing is, you don't need to be told around by other people, it's pointless.
If you find a thing that's suitable for you, stick with it.
Personally, as a level 30 thief, the first thing I'd do is get at least 20 dex to 30 dex,
20 to 30 str and the rest to agi up till 50.
So, first thing I would do is, get a decent amount of dex (20 or so does suffice), then
str (I find 30 to be advisable) and then go for agi, which should make you dodge more
often.
I'd either try Poison spores (geffen tower) or metallings (einbroch, down, right, right, up)
up till job level 30.
After that then, go and play in Toy Factory I guess.
Anyway, that's what -I- would do in your case.