Winter Setup For Roadster Touring Sport

[fmusignac]

Hey guys, I need help confirming what to buy in order to prepare for the winter.

I have a 2010 Roadster Touring Sport. So I have 19'' rays and the bigger breaks.
What do I need for a safe and nice looking winter set up? I have read that 18 inch will work better in the snow.

So I am thinking

-18 inch wheels (like TR Motorsport C2 18 x 8.5)
-Bridgestone Blizzak LM-60 225/50R18 (is this the best set up?)
-What spacers do I need for the back in order for it to look better and avoid the oversteer referenced by other owners?

I found the above set up (sans spacers) on tirerack for 1500? Its going to hurt but anything to keep safe since this is my daily driver and I want to keep it. Otherwise Im going to go trade in and get a Jeep so I can survive the Iowa winters.
Would it be better for me to find a set of OEM 18's?

PLEASE HELP! Thank you all!