Need help with wheels.

[Quicklyy]

Fairly new user here looking to get some opinions on wheels and help with the size and offset.

Here is the only pic I have of my cars currently, the wheels will be for the red z.


The wheels I was looking at are
Gram light 57 pro


Rota p45r

[Z-owned]

I like quality so I would choose the gram lights out of your two options. Or if you like the rota style find a set of lmgt4's and have the real thing.

[Quicklyy]

What size do you think? 18x9.5 18x10 is what im thinking but im not sure about the offset for the gram lights. Also the car wont be lowered for a while.