Hey pmsmith, here are my thoughts on the subject. I'd all but forget the oaks (as a food source), that far north acorns should be pretty much done and over. I'd look most heavily for funnels and / or travel routes around those farm fields. By November, bucks could very well be starting to search for does. If you can find an area between feeding and bedding or between two bedding areas I'd go all in.
Good luck, hope you score big.