the tires? Porsche considers them past their use by date after 6 years.
I'd advise a coolant drain and refill with a fresh mix of anti-freeze and distilled water. Porsche claims the coolant is a lifetime fill but the coolant's ability to fight corrosion drops and its ability to help protect the water pump seals drops. I changed the coolant once after I bought my new '02 and managed to get 172K miles out the water pump. The 2nd water pump is going on 110K miles with just one coolant change since it was installed.
It is a little premature to do a tranny/diff fluid service unless the car is equipped with a Tip. If so, then I'd have it done. If the car equipped with a manual you could wait until the miles hit 45K which is half the miles IIRC the factory calls for a fluid service. Still early, of course.
Check but I think the plugs are due to be changed on time.
Up to you but you could have all of the above done at this service and then not have to worry about any other services but oil/filter every so often for a few years.