Forum:Kushala Daora

I am having troble kill the Kushala Daora What the best way to bring this Dragon to it's knees? My current weapon and armor is

Weapon: Devil Slicer

Helm: Rathian Helm

Chest: Tigrex Mail

Hands: Rathian Vambraces

Waist: Rathalos Tasset

Feet: Rathalos Greaves

First question what items should I carry and how many of each?

Second what armor set is best for killing the Kushala Daora?

Third Do I need better armor I am currently make the tigrex armor?