I think you'l find most aircrew don't want to be bounced around if they can possibly avoid it. In the case of the kind of jetstream being predicted in a few days they want to avoid it, not just to avoid the turbulence but also because a longer route is almost certainly faster because you avoid the headwinds.
My guess (and it IS a guess) is you'll head up over Iceland then left over central or even northern Greenland then over the North of Hudson Bay before heading back south towards Chicago. That way you should miss the worst of the weather.