I've packed bearings before. Don't think I've done wheel bearings, but I've done a fair amount on bikes (steering head bearings, swingarm, etc).
Do I need any special tools?
Powerbuilt 648475 Spindle Nut Socket, Six Outer -... it appears I need those.
Is there anything I should replace while I'm in there? Depending on how calipers look I might replace them, I'm considering doing some other suspension stuff too. All the ball joints are caked in greasy dirt, so I might do them as well. I don't have a press, but I do have a BIG vise (Reed 106) which I suspect will be adequate. Of course, at that point I might put in the springs I have sitting around, and at that point I should do new shocks too, and at that point... so I might just stick to the brakes.