I like your screen name. And I promise to not try to tell any stupid jokes about an 8000 pound wench on the front a Jeep.
Axle upgrades should, I think, be avoided unless/until you get to the point where you discover you absolutely need them. In other words, go break those axles first. I doubt you will, unless you absolutely have no subtlety with your gas pedal - if you see a big rock obstacle, and try to "solve" it by slamming on the gas - well, you may need to upgrade. If you prefer a more subtle approach, you'll most likely be just fine.