Need suggestions for tires DE car

[RedTele58]

Hey Guys - I need some help with tire size for my new wheels, and also suggestions on brand/model.

They will be going on my '99 aerokit Boxster that I use some for street, but is mostly my DE car. My goal is stickiness and performance, not wear, but I'm not ready for a R-compound tire. I'm also not worried about all season performance - summer only is fine. The wheels are a GT3 replica wheel. Fronts are 8 1/2x18 52 ET, rears are 10x18 54 ET. I'll probably have to run 5mm spacers. I have the spacers and the longer lugs.

I'm thinking 225/40/18 for the front and 255/35/18 for the rear, but I'm not confident the rear size is correct.

I ran Re-11's this past season and was mostly happy with them. I'm also looking at Potenza Re-71R and Potenza RE 760 Sports. Also Potenza S-04.

No preferred brand, so I'm open to suggestions.

Thanks!

Rick