Because of the age of the vehicle...Timing belt and water pump and the front seals are very important. The engine is a zero tolerance engine which means that your engine could be badly damaged if the timing belt breaks on you. On a typical 90k service your timing belt, water pump, seals and oil and filter change, transmission fluid, engine coolant, pcv valve, tire rotation and balance of the front tires, wiper inserts, air filter, surpentine belt, will be replaced in addition to come inspection of the key components of the vehicle. There is a shop in chantilly VA called Chantilly Repair Center that specializes in Lexus and Toyota vehicles, that maybe an alternative to dealer. They use genuine lexus parts and are very well equiped with lexus and toyota equipment. Hopefully they can be of some help to you. Chantillyrepaircenter.com
Good luck.