Pony build should be able to achieve higher Grift because of Stunlocking and range. But you need 1 of the rarest weapon in game. Furnace.
For gear, beside furnace. You need to get 6 pcs akkhan, No RORG, use Unity and SOJ. Without Leoric Crown, you will need Vigilante Belt and almost every slot on max CDR.
Or many cruz use Gogok gem to make up the CDR cap(56%)

Ya. All Physical.
You playing Season or non Season?

HeartSlaugther with max 30% physical

STR
CC
CDR
Skill%