Welcome to XOC.

If you are going to offroad the X, then yes the brushguard and steprails should be replaced with an offroad bumper and some rock sliders. Shrockworks and Calmini make some good aftermarket offroad parts.

Changing the tires is a good thing as well. Scrapping the passenger tires (p-metric) and replacing them with truck tires (LT) would be a good idea. Many of us run an All-Terrain tire, and some of us run Mud-Terrain tires. Those of us with extra cash have a set of both.