Rusty on my D&D 3.5 rules, but read up a bit on why this build works:
-Rogue to get Weapon Precision (Dex for melee not Str), Daggers, Sneak Attack
- Monk to get Wis bonus to AC feat
- Fighter for HP, BaB, Weapon Specialization
So you only need 3 stats Dex, Wis, Con and you buff everything...