When I do my 90,000 miles service on my 97 ES300, I replace TB and WP and following items:
Cam seals,
Crank shaft seal
Spark plug seal,
Spark plug,
Wires if needed.
(My 02 camry don't have SP wires)
Intake Gasket
Both valve cover Gasket
Coolant hose (between Two valve cover)
Please use Toyota parts.
Then, Car will be ready for another 100,000.
Hope that helps.