Cant help you with the odometer, but just do the basic tune up things on the car. New fuel filter, plugs, wires, air filter, etc.
Also, being a 94 I would immediately check and make sure its had the head gasket fix that 94-96's had issues with. They came with a bad head design and would blow head gaskets, so you might want to get that looked at. You're right at the milage that people would usually find out about that problem. Good luck, and