On my Assimar monk, I start at 8 str/13 dex/18 con/12 int/18 wis/8 cha.. That being said, I do have a +8 Supreme tome on this character, so I delay taking TWF till level 2 when that kicks in. If I didn't have those stats, then I would say 8 str/15 dex/16c on/12 int/18 wis/8 cha for a 32 point build. If you have extra points then I would put them into cha for the UMD (no fail raise scrolls).