You can use whatever seasoning you are partial to. A pork rub should be fine. I would use 2 to 3 oz of your choice of wood. However, I would only smoke to an IT of 125, remove it & reverse sear it (wide open) on the grill or oven. Your finished IT should be between 135 (med rare) & 145 (medium). I like it @ 140. Ensure you allow it to rest before slicing.