E70 Wheel Offset

[mairomaster]

Hello!

A few months ago I bought 2011 E70 40D with an M Sport Package. It came with the following wheels:

Rear: 315/35R20; Rim 333M Double-Spoke Style 11.0J x 20 ET35
Front: 275/40R20; Rim 333M Double-Spoke Style 10.0J x 20 ET40

It's getting cold where I live and I expect it to start snowing soon. For that reason I want to buy some good winter tires. This will require getting new rims as well. I did some research and chose the following configuration:

Rear: 255/50R19; Rim 9.0J x 19 ET18
Front: 255/50R19; Rim 9.0J x 19 ET37

My question is - Do you think the offset of the new rims is suitable? I am more concerned about the rear ones, since the difference in the offset is quite a bit (from 35 to 18). The idea was to get a smaller offset because the new rim will be quite a bit narrower, so that it can pop out more. That way the depth of the wheels shouldn't change too much.
If I go for some more common offset like 37 for the rear ones as well, I am afraid they will look too retracted which wouldn't be very pretty.

I used the following calculator to run the numbers:
https://www.1010tires.com/Tools/Whee...et-Calculator#

Thank you!