2003 Honda Accord timing belt, valve adjustment at 60k main

I have 60k miles on a 2003 Honda Accord Coupe EXL.
In addition to the 60k regular maintenance, Honda suggested the following: 1) timing belt package @$889.00; 2) Valve Adjustment and Replace Valve Cover Gasket V6 Engine @$640.00; 3) Replace Platinum Spark Plugs; 4) Throttle Body Service.
Most of my driving is around town. I want the car to last me to 120,000 miles. I always take good care of my cars.
Is this necessary and or good service practice.