D1Z4STR

I have been following STEP since its first release and patiently waiting for the upcoming one. I am would like to add 1 more thing to my game for harder game play to the STEP process. I was thinking either Duel - Combat Realism or Requiem for the increased challenges across the board. Would it be a issue? The only thing I can think off is that Requiem could conflict with Skill Interface https://skyrim.nexusmods.com/mods/7308. Thanks for any help.