It seems like you have covered your bases. I don't see any issue with replacing wear items and doing other maintenance all at once when you get a new car, especially if you don't have a lot of the service history or just want the peace of mind. Plus you maintenance costs for the next few years should be lower, since you have already done a lot of what you would likely need to do later.
As 911monty mentioned check you drains, if they clog water can get under the driver's seat and ruin the immobilizer (very expensive repair). If you haven't changed the brake fluid, that should get changed every 2 years. Then you've got the fuel filter, cabin filter, air filter, and serpentine belt. If you want something more in depth, a good starter DIY, take the front bumper off, clean the radiators, and reroute your front trunk release cable behind the front tow cap for easy access if the battery ever dies.
Funnily enough, the 986's that sit around do, in my experience, tend to experience more issues. These cars were made to be driven!
Porscha
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