I'm as much of a fan of slips as the next guy, but with the aggressive styling of the 8th gens I don't think they would look as good as some other rotas. Some circuit 8's would probably look great, or some advan r1's.
I do have a set of rims that came off of an 07 si for sale if you're interested. They're RMC dipped Rays Daytona 707's that were ordered straight from japan and took 3 1/2 months to get here. Over $1800 paid, I can let them go for $1200 OBO.
Here's a couple of pics of the car that they were on.. If you're interested and want to see better pics I can get to them: