http://www.giantitp.com/forums/showthread.php?t=54160

Brutal Throw (CAdv) = Good.

Hide, MS and UMD complicates things. (You can get tumble from Skilled City-Dweller, if the DM allows it.) Maybe a variant rogue, for the feats?

Get Gloves of Endless Javelins (MIC 194, 7000 gp) ASAP.