Update:
I went with 255/35 285/35. So far very happy with the tires. Tested them with a hard acceleration at 50F (tire), damp road, and I couldn't break traction loose in 2nd gear (sport+). MPSS would have no trouble spinning even when they were new under similar conditions.
Ride quality is way better and it feels like I got new coilovers instead
I will definitely miss the feeling of breaking traction on a whim, though.