993 Wheel Spacer Question

[Switzer]

I am having a coil-over kit installed on my 993 C2 and I am hoping someone can give me some advice on what size wheel spacers may work well.

I am lowering the car to the Euro RS ride height, and I have factory 17x7 and 17x9 twist wheels.

I would like to avoid the "slammed" look where it looks like the fenders swallowed the wheels.

Any suggestions from folks that have set their 993 to the Euro RS ride height and kept the factory wheels?