Storm Windows on old house with no insulation

[Chris Heeren]

I recently purchased an old Victorian house that has no wall insulation and single pane glass. I'm replacing all the old windows in the house with new double pane vinyl windows. I'm curious if anyone recommends adding storm windows as well to help insulate the house? Normally I would say this may be worth the extra $3K-$4K in a new house but since there is no insulation in the walls, I'm wondering if the new windows would not already have a higher R value that the walls themselves and adding storm windows wouldn't be worth the extra cost. There are 35+ windows which most of them are over 71" high, so it's no small task to add this extra protection from the winter.

BTW I live in Wisconsin where it can get below zero during the winter.