Your indy should have some recommendations. Springs are expensive, especially OEM ones. That and the fact that you have more mileage than typical 2011's is why I did a quick look on eBay. Most of the cars like yours in wrecking yards are going to have less mileage, and springs rarely break so basically you'd get springs and struts with less miles for less than new springs. Plus the labor will be less to swap the whole assembly rather than just the springs.