Other then playing around with 2-3 AP for prefrence, thats about as perfect a build as I can think of for a DEX based Halfling. The stat distrabution is ideal.
The only thing I'd do diffrently is consider less Jump (or INT tome, or jump clicky if I had one) to get more move silently for shadow fade.
Oh, and eventualy I would respec to Crane for the Ki regen.
I should now probably spend more time getting around to playing a monk then building them ^^'