Nicely written guide!
There is only one issue in my opinion - that of opening with Mutilate.
In my opinion skilled rogues should always open with Garrore. You can easily do Garrote - SnD -HfB and then do a 4 or even 5 point envenom without dropping initial 8 second SnD. This provides few advantages - first you don't waste 2 combo points from opening with Muti that essentialy are useless to open SnD. Second, when opening with Muti, your target usualy is yet to be poisoned and as such you'll lose 20% of Muti damage, while when opening from garrote you'll stack some Deadly Poisons on your target really fast.