So remind me again what is your route. You are starting your Minnesota experience at Myre-BI correct? And that is just an overnighter? Where to from there? Straight to Bemidji? What are the dates you are planning to be in Bemidji SP? What is your route from Myre to Bemidji? And what is your route from Bemidji to Cascade? Where is your Duluth rally? And where to from there? If I know some more information, I can get my brain going with some ideas for you! :-)
One suggestion I have is to consider the La Salle Lake State Recreation Area rather than Bemidji. Bemidji is a beautiful park and a nice beach area, but the campground is a bit crowded. La Salle is closer to Itasca and is a newer full hook-up campground with very large sites. Looks to have some good availability still for the Labor Day weekend time frame. Just a suggestion.
Did you figure out how to get your annual permit?