Almost any of the "Canadian" roses should be fine. Buck's roses should be OK too if you mulch them. I understand about not wanting to do a lot of maintenance in the fall.. just pile on the mulch when you plant them half way to China & be done with it. Sure, you'll have to replace the mulch every 3-4 years, depending on how fast it breaks down, but that's a single chore once every few years, so that's not that big of a deal.
But honestly, don't let zones bother you. Almost 100% of my roses are zone 6 and I have a few zone 7 roses that come back for me year after year. The key is to mulch & mulch & mulch!!!
