Congrats, good luck with the drive! In terms of common issues with the vehicle, listen for any creaks when you're turning the steering wheel, particularly under spirited driving where you might exert more torsional load on the wheel through the turns. Also listen for creaking from the back deck where it meets the window. Looks for any hairline cracks in the rear window. Check charger port door alignment when it's in motion to ensure it's not rubbing against the chasis and leaving a streak, and also ensure it's properly flush.
+1 to the trunk/frunk alignment/rigging.
It's all fixable, but helpful to know in advance what you're getting.
Check the software version, if it's EARLIER than 2.1.43, you'll need to have a Service Center manually update it to 2.1.47, after which OTA updates can be applied to make it current (they'll likely do ALL the updates to make it current in any case).
Pay attention to how the car handles and how versatile it is. The whole package is pretty astounding if you're looking for a well rounded performance vehicle with range, comfort, cargo space and a great interior. If you're aren't smiling big time after the drive and dying to drive it again, something is amiss.