I was thinking about putting some hives in the attic of my garage to keep them out of the way of my kids and protect the bees during winter in MN. The attic has a north-facing window that can be kept open, but will the bees be able to navigate in and out? Cutting an exit hole on the south side of the building is an option if necessary. Are there any other factors I should consider, aside from carrying full supers down a flight of stairs? I feel like this isn't a great idea because the closest I've come to finding someone else that has done it is a blog post about keeping bees in the hayloft of an old barn.