Just chiming in on my newbie front axle service this past August: 27 hours of shop time over three or four days (that's a little long though, could have been shortened a LOT by a seal puller - <$10 get one). Also get a pipe that's the right size and length to "help" separate the birfield. Hub socket about $30???$50???, Rebuild kit, cheapest I found was Marlin Crawler's - $90. TLCA discount or CDan or ??? might help with that though. Plus gear oil, grease, at least a full box of latex gloves, and a couple rolls of paper towels, a tarp you'll throw away when you're done, and clothes you'll burn when you're done. Jeff Zepp's site rzeppa.org and some other in the FAQ (http://www.ih8mud.com/cruisertech.php) were good references with pictures. Once you get one side done (recommend short side first) the other goes WAY faster. It was like 19 hours for short side 8 hours for long side for me. HTH
Time goal for next front axle service: 12-15 hours if all the junk is in halfway decent shape