Everyone has made some very good suggestions but there is a blurred line between rock crawling and expeditions. For example, per my definition of expeditions, dual cases would be a waste of time and money but I'm sure others would disagree as their definition would differ.
You really need to decide what you want to do with the mini and go from there.
The line is very blurry. Just about anything you do to improve capability on the rocks will help in expedition mode. Within reason. You need to avoid the rock crawling extremes. I don't think dual tc's are a waste of time in an expedition rig. I have a single 4.7 that has got my butt out many times. But I prefer dual cases, and I have one in the garage ready to go in.


...what worries me a little more is fitting a bench seat up front.