Nice write up on your travels. Been to all those places in the UP and a few times in the winter on sleds. Brockway Mountain is one cold, dreary, depressing place in the winter time. At least every time I have been there. Delivered for SYSCO up there for years, if they serve food, I was probably there.
Big Bay is an interesting place to visit. Henry Ford pretty much owned the town and had some wood processing plants there for materials used in building the Model T, and making bowling pins. Thunder Bay Inn is a great place to eat, built by Henry for all his friends. They also have a few rooms there, and is supposed to be haunted, so if you are into that kind of thing maybe a place to stay? I never have.
The Ambassador in Houghton has some great pizza too.A couple of blocks east of the bridge on the north side of the street. Lots of college kids from the Tech, but bikers too. Everybody gets along up there.
I love the UP. Black Flies can be vicious up there at some times late in the summer.