Mark,
Glad to see you here.
From my perspective here is my list (based on popularity and how much people benefit from the option and what "my car" would have).
Must haves:
- Ceramic Coat Headers
- 17" Wheels
- 3M Protective Film on the Rear Fenders
- Ray Dyot Mirror (windshied mount)
Should haves:
- Tonneau Cover or Top
-
Oil Cooler and Remote
Oil Filter Mount
- Chrome Overider Bumpers
- Moto-Lita Wheel
Don't needs:
- Sport Suspension
- Glove Box
- Passenger Anything
Based on your location I would get the top for sure, if you have the top then the heater is not so bad. Best thing would be to have a local upholstery shop do the seat heaters ... would be a simple retrofit for them.