When to change plugs, PCV Valve, and Fuel Filter on 2002 Camry LE V6?

I have a 2002 Camry LE V6 with about 60,000 miles on it now. I read that
this car has the Iridium plugs that need to be changed at about 120,000
miles. I have always done tune-ups on my cars (new cap, rotor, plugs and
wires if needed) at about 40,000 miles so for me not to change plugs till
120,000 miles seems unheard of. My previous cars were Ford Taurus, and
Dodge Spirit.

When should I change the spark plugs on my car?

Also, I have always replaced the PCV Valve every 40,000 miles, and I have
not done that as of yet. When should I change the PCV valve?

Lastly, the fuel filter has not been touched yet. When should that be
replaced?

thanks