Recently took delivery of a 991/50 C2S 7MT I had the dealer install 3M clear bra front and back and got the tire and wheel warranty. I've purchased and installed the following:
from Suncoast
Door edge liner
Trunk liner
Winter mats
Clear front turn signals
And a Skene front license mount
Schild Hood Liner
Ctek battery tender
Antigravity charger

So anyway I was reading a GT3 forum and someone mentioned pricing for a car if it had the right mods.
What do you people think a 991 should have? I'm a stock kind of guy and sometimes over customization just looks wrong. It seems to be a delicate matter - for example the wrong logo on wheels could be called cheesy, but if it said so-and-so it's ok.
I want to do track days and am not having luck finding 991 appropriate mounts. Other than that, what are 911 must haves?

 

Looks like you got it covered.
I would suggest,

Windshield protection.
The glass pits very easily.
Too late for me, now I need to plan for a new WS.

Since you have 9" front wheels, upgrade to 255 front tires, when you have the chance.
I felt it improved the handling.

A 95Ah battery fits the tray (my stock was 70Ah) and is available from either Porsche or Odyssey.
Downside is, it adds 15lb.
I made up for that by dieting.

Only other mods I really want are,

Rear Window glass w/o stupid defroster wires in it.

Upgraded Radio/Nav.
The PCM is so crude.

Front Lift System, like offered for GT3.

Less rattles...
Maybey that is why they put a Sound Symposer in the car...