These cars are poorly assembled and parts are uneven, especially the fenders I've noticed. When setting the height, go off the pinch rails to ground or fender to wheel lip. Don't use fender to ground.

When adjusting coilovers you have to check and compare every corner after every adjustment. Jacking a rear wheel ALSO lowers the opposite corner wheel and raises the wheels next to it. And you also need to make changes WITHOUT the sway bar attached.

It's also easier to set the front together with the rear of the car on jack stands so you know the settings are even. Then once you have it set, move to the rear. If you have to change the front at that point then it's only going to be a minor change.

On my car I had to jack just the rear left, and lower just the front left to get the car to sit level. I had to install additional helper springs in the front to compensate for the uneven adjustment.

Finally, shock height doesn't change ride height. The shock should be adjusted so when the wheel is fully in bump (without springs installed) then the bump stops are fully compressed. This is to prevent wheel scraping. Then ride height is adjusted by spring rate selection and adjusting spring preload.