I don't know how long you can wait on SA at the moment for it to still be a net increase in DPS over using Evisceration at 100 TP. I know that DNC can only go up to something like 150 TP and still get a net gain out of Climactic (ignoring the JA delay that goes into Climactic or the steps that generate those FMs.)

Bottom line is that at the moment you're best off just spamming the crap out of Evisceration against most targets.