I'm using this at grift 51~ and its going really smooth 0.00 Deaths/hour been botting over 24 hours.
You should have 46%, more is ofc ok but not less CDR, That means max cdr on gloves,shoulders,weapons,helmet(socket) and paragon if you want more vitality you can put vit instead of CDR on gloves and put CDR on a ring instead.
Legendary gems i'm using are Taeguk, Bane of the Trapped and Bane of the Stricken.
Cube items are Fulminator, Hexing Pants ,and Unity
For Bane of the trapped to really work you need to optimize your follower for it (I'm using the Templar) in case you did not know make him use Thunder Fury, Bul-Katho's Wedding Band, Unity and for Amulet i recommend Ess of Johan and his skills should be, Heal, Intimidate, Charge, Inspire.
I would also recommend rolling Attack speed on his gear so he procs thunder fury more often.
Edit made a planner if you dont know what equipment to use:
http://www.d3planner.com/778876289
Below is a link to my trinity settings.
http://imgur.com/a/YiCTK
also dont forget to modify the variables like on the first page:
SpellDelay.DemonHunter_RainOfVengeance changed to 2000 ms
SpellDelay.DemonHunter_Preperation changed to 10000 ms
SpellDelay.DemonHunter_SmokeScreen changed to 2000 ms
I also attached the latest version of DemonHunterCombat.cs (From Trinity 2.13.59) with the Rain of vengeance edit for ppl who doesn't know how to do it them self.
For ppl who doesn't know DemonHunterCombat.cs should be placed in "Demonbuddy/Plugins/Trinity/Combat/Abilities" when it ask to replace just press yes.