First post, I don't have a G37 yet however I've been looking and test driving them for months and just waiting for the funds to get one. Looking at a G37x Coupe in grey or black

Heres my question. I live in an area with -40' Celcius winters that last 6-8 months. So theres snow and ice. Summers are amazing though. The winters are why I want the AWD so I'm wondering if I get airbag suspension I could lower the clearance during summer to 3" or so, and in the winters raise it to 5" more or less for snow ground clearance. I've never had airbags or aftermarket suspension. Is this possible and is it a good idea?