I have a 2nd set of rims. I found a mint set of stock 18's for $500 delivered from an auto salvage place in Ohio. I "think" I named them on here some long time ago.... After the first season outlay, you are golden. And you sorta can't wait for the mucky weather to hit, knowing you are going to be just fine when it does.
As an aside, in many ways I prefer the ride on the winter 18's to my 19's. The cornering isn't as good, but for cruising and road feel, much better on the smaller rims. I wonder what 22's must feel like!