Why not Acid Blade, Hidden Strike, SHIV, Backstab, Lacerate?...your backstabbing with 1 TA (2% damage bonus) as oppossed to a possible 4% from having 2 TA's up, and are also giving your lacerate a 2% bonus too from your remaining 1 TA. Not only that but your getting your next Shiv off of cooldown 1 GC faster for yet another TA and a Lacerate with bonus damage.