Exactly. Level 46, to be exact. You'll get the two best one handed swords in the game and the best bow.
Oh, BTW, the lockpicking ability is useful only a handful of time. In fact you can gimp yourself to play with a character that can open locks only through the tower stone ability and still complete the thieves guild questline. Sneak is essential (especially in the first two missions, the others can be resolved through sheer violence).
Well, there's a dilemma.. there's a long way to 46 from here. Bah..Grey Fox reincarnate, a.s.a.p!
(I could at least start it now, yeah? Just to get some sweet TG armor? and NOT go after the swords, bow, other neat swag just yet?)