If the car has a ton of miles, consider replacing the oil pump o-ring (if the oil pump lives under the timing belt as some do). I did a few DOHC Camry timing belts and they were actually pretty easy - but if you leave some crusty old seals in there, you will be bummed when you finish your timing belt and still have oil leaks. Replace any and all seals and o-rings while you're in there. I would look to RockAuto for AISIN brand parts - you could easily beat dealer prices and get OEM-quality stuff, all in a handy kit.
Colo Springs, CO