In my opinion you would be crazy to take a package delivery job over an engineering degree job. I doubt an engineering job would keep you out until 10:30 at night in the rain and snow.
I hear you, but with rent rising the way it is where I live I may be forced to take whichever one comes first.
I don't mind the rain and snow, though. I'm at my best in those elements, actually; it's the sun that bothers me.