Hi, welcome to the club!
I have the same car, bought with 96K and didn't notice how put 1.5K already on it

Check with Infiniti what services were done on your car. Known as very reliable auto but things wear... Suspension is probably worn by this mileage, so if you want ride like new think about changing struts, bushings etc.
The things I've done on my car: Mobil 1 oil change, new tires, new battery, double transmission flush with Mobil 1 ATF, new transmission oil strainer, alignment, BG1 injection system service. Thinking about new struts, Stillen tension rods (to be able adjust caster), performance brake rotors, etc.
