Yes i have the Maserati charger it came in my car, gift, i will connect itHopefully they can address your concerns. The seat would be my biggest concern if it got worse. I had similar seat problem in my older car and 10 years later it still was fine.
The speakers should be easy for dealer to replace. The panels come off and on without concern for more rattles.
Car does look great!! Sad it will sit so long over winter, but know you want to keep it looking new. Expect you will use a trickle charger to keep the battery in good condition? I keep my car in the garage from December-March with trickle charger on battery ... starts right up.
when you leave the car charging for a few weeks months, do you leave the trunk a bit open? or closed?
I have also the gibli cover, I will put it over ( Indoor cover)