imo that spec will not perform as well as the normal cookie cutter build that most assassins are running. You will have poor force management, poor survivability as missing out on some of the better boosts to your self healing that talents further up in madness has to offer.
The spec that I am yet to try out is this
its what I will run as soon as I get time to test it. You can switch out fade and deceptive power and put them in saber conduit but I ran a similar hybrid and it did fairly well. Also its a simple rotation thrash, shock and maul deathfield and the force management is quite good.
I still love madness and think it performs great once you get use to it but when I get bored I run that hybrid.