I just set the priority on my rogue in that order and it does it perfectly, just keep those 3 skills and don't use other skills for combat (save for assassin's rage).
So it's:
Shadowstab - 90
Low Blow - 80
Wound Attack - 70
You can also use a macro as suggested, just only put shadowstab in the profile and set the cooldown. The problem with macros is they start when they start and that's not always when the monster is in range. As well, adding other skill such as assasin's rage will be used replacing one of the skills in the macro because it doesn't pause for global cooldowns.
So manually playing a rogue macros are great but they are a pain in the ass when trying to bot with them
Oh and with priority you can still add throw as it is only used for pulling (assuming you set pullonly).
Good luck with whichever one works for you. Please do post the results, eventually I'm gonna go back and finish leveling my rogue
EDIT: Didn't see that part about warrior slash. I guess it if works to add damage for wound attack use it in priority righ befoure wound attack otherwise set it to after wound attack.
