Tehmaster

I know this topic is probably beat to hell but I just wanted some fresh suggestions. I plan on making my car into a weekend warrior track car. I have an LT that's been swapped to 5x110 and getting lnf front Brembos soon. I currently have some ss/sc wheels on it right not and I was looking for some light dedicated track wheels. I'm not sure if 17 or 18 is the best size.