As you're likely to get rid of the car within a year, then it would probably be best to have some middling or winter-biased all-season tyres fitted on the 17in rims. That is, unless you know from experience that they could get damaged during the winter season.
Like most tyres, the CC2 (latest version) all-season tyre will be more expensive when buying the 17in versions than 16in ones. I'm presuming your 16in wheels are steels rather than alloys, and that the 17in ones are the OEM alloys.
The latest CC2 tyre has apparently been designed (backed up in unbiased test reviews - see the Tyre Reviews website) to work very well in snoy conditions with a very small penalty in warmer weather.
The previous generation CC+ tyre (which my Mazda3 has fitted [I live in E. Anglia - not renowned for snow in winter]) is a summer-biased tyre with some winter performance, but not as good as the middling or winter-biased all-season tyres.
I'd suggest you take your local conditions into account as well as the relative cost - the Michelins should last longer than most rivals, but are amongst the most expensive. You could save more by using another (decent) make/model of A/S tyre but which wills till do a good job, more than enough to get you through until you sell or PX the car.
You'd be surprised at how far all season tyres have come - most in the past (7+ years ago) were decent in the winter but poor in summer, but they've improved considerably in that regard.
Again, the Tyre Reviews website has a lot of useful tests and data to help you, and its onwer (Jon) is very helpful if you ask him questions via the (Disqus) comments section below the articles or videos (which are also on his YouTube channel).
Best of luck.
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