Those rims are the ones I run as my winter rims. I have snow tires on them. They are nice rims, I just like my other ones better. I'd say if you like them, great, if you don't browse Craigslist or something until someone who's going with aftermarket rims trys to sell some nice stock 18" ones. Or go aftermarket yourself.
I've never seen that trim with the "GT300" on the side either. Whatever package you got, I don't think is available here. Awesome car though!