Everyone has different preferences. I would go TDYK personally. Maxed it will two shot Vex and Harpies. I am biased to hand cannons. Any void weapon will help. Especially heavy for void damege. I use Voidwalker. Super and void grenades help a lot.
You will die,probably a good bit until you learn where to go and what to do. Communication is the key in the raid. Feel free to ask questions.