My Marvelous Chester Build.
When Melee combating...the Crossbow can be quick changed (in order to keep Ninja Flip/25% weight) into Great Scythe +15, Lifehunt Scythe +5 or Qualaag's Fury Sword....any high dexterity weapon.
Poison Mist is just to obscure view as you shoot sniper bolts through Mist...for free-aim shooting with crossbow, use crossbow with binoculars.