Front Axle Seal Question

Looks like I got a leak in my drivers side front axle since I've got fluid on the steering knuckle. As you may or may not have read in my other posts, I'm sending my jeep to my mechanic over in western mass for a month to go through the jeep fix it up. Assuming it is an axle seal, what else should I have him replace while he's got it apart? the jeeps got 128k miles on it and is a 2000, I don't believe it's had any work done to the axles, other than new u-joints last year. I think we did the ball-joints on the passenger side abour 30 - 40k miles ago, would rather spend a couple hundred extra and get things done while it's apart then have to fix it later. Thoughts??