What parts do I need to change theTiming Belt on my '98 (4 cyl) Odyssey?
 

The car only has 75K on it but it is eight years old. I am going to
have my mechanic do it but he suggested that I get the parts and ask
the parts counter what they recommend changing. He wasn't sure if the
idler pulley should be changed, for example. I have never heard of
people doing that on Hondas. I was thinking that I need the
following:

Timing Belt
Balance Shaft Belt
Water Pump
Coolant

Any thoughts?