Its understandable why you feel the car is slow coming from a 9 second termi. The termi is nowhere near as refined or as smooth as the 2020 so 9 seconds in a termi feels faster than 8s in a 2020, I get it. As for others.... Assholes and opinions, yea?
As for what to do IMO to not tip the balance...
I get ya. You're taking it well it seems. I was in the exact same boat as you (traded car in, missing good driving days, wait seemed like forever, ECT) I guess what Im saying is I'm/we are here to tell you it will be well worth the wait and over and a distant memory before you know it.
Side...
If you want to feel a bit better, go back about a year ago to the production thread, theres about 100 of us in here who had to wait through over 2 months of shutdown with ZERO update on anything. Some weren't even certain their car was getting built at all. You're in the home stretch
To be honest im not sure of the difference between the 2 graphenes. I have seen them next to each other. The Graphene seemed to make a tiny bit difference. Lots of factors could be at play for sure IE coating methods, the person doing the coating, the color of car ect. Like I said, either way...
I ceramic coated mine as well. The ceramic can be a taxing process but a most rewarding one. I am planning on buffing the car out and switching to graphene as the graphene coating is next level according to club members I know and from seeing their cars. Good luck and Im sure you will love it!
For stock I've been told they hold pretty well and they handle excellent.
Match them up front if you can, different grip will change the characteristics of the car if you throw it into turns hard