In PvE, when using DS, there isn't a reason to use shock or anything like that over SY. The build has already been posted, like it is in every other thread (i.e, search before making threads).
I don't see why you have an adreneline engine designed to pump out energy skills...
The energy skills are there to open a fight. When "for great justice" is active, I spam dslash and that's it. When it's not active, I rely on building adrenaline normally and hit dslash when I've gotten enough. The other thing I've been doing is replacing power attack w/ standing slash, and first attacking w/ dslash and then a quick follow up w/ standing slash (since I'm using flail I get the extra damage)