The main reason I am holding off on buying wheels right now are because of the costs of added weight for "affordable" wheels, and the increase in price for tires. Not to mention that ride quality and performance might go down as well.
I do think with 17" rims you would be fine with stock Rotors. And I don't think u would have to swap out stock suspension. Although if your on your original stock suspension it might be time to do so anyway.