I just went through this exact case myself. I did the timing belt myself, with assistance of my mechanic friend.
Some things to note....
1. It is a good time to do water pump, thermostat, coolant hoses if needed. Everything but thermostat has to come off anyway.
2. Make sure you get good quality parts and seals. Dayco belt, OE belt tensioner, Corteco seals etc
3. A viscous fan spanner will help getting the fan off. I got one for $18 off eBay. LINK
4. They sell a injection pump timing pin kit, and flywheel timing lock kit on eBay for about $10. This will make sure everything is timed correctly. Buy it. LINK
5. Removing the crank bolt, and pulley can be a real hassle. Mine wasn't bad, but I heard it can be. There is a specialty puller for sale for this on eBay if you feel the need to buy it. This kit includes the timing pins mentioned above so you wouldn't need both. LINK
6. Now would be a good time to replace inner crank seal, and camshaft seal. While the cover is off you will have pretty easy access to them.
7. Make sure he follows the manual on setting timing belt tension. You have to set it, turn engine over, and then re-set it again. Not a big deal, but follow the book.
I have done a few other timing belts before. This was about as difficult as a Honda civic. Maybe easier because once you get the fan/shroud out of the way, you have a lot of room.