Mechanical Improvement Option

[MarineHawk]

Okay, two months after buying this beast, I have bought: monster tie rods, a winch, upgraded rear diff cover, 37" tires, and magnetic shields. If I do nothing else, what's the first thing, if any, I'm likely to break or damage on difficult, but not extreme, trials such that I would say "Damn, I wish I could go back in time and install a ___ so that I would not have broken my stock ___ thingy"?
Here, I'm not really looking at performance enhancers, like lifts or a front-end locker yet. Just trying to shore up any loose ends if there are any.
Do I need a steering stabilizer?
Better shocks?
Something else?
Nothing?

Thanks in advance.