I went with Hankook iPike RW11's 275/50/20 I got them for 865$ Canadian tax in.
I'm pretty sure they'll be cheaper down in the USA.
I'm keeping my original wheels on for the winter and buying mags next summer.
Here in Canada, This route was the cheapest way to go. 17" rims were 100$ each and the tires ran at around 250$ each.
And next summer I'm buying mags that aren't plastic.