Bill,
Northland in Duluth is a great Ross, and probably not too hard to access.
Bobby Weed's course out in Stillwater (somewhat out of the way, but not objectionably so) is worth a play, I like it a lot. Lawsonia is a drive, but is great. Might go out of my own way to play it!
June 1 can be iffy, so dress warm. August 1 can be iffy if you come from So Cal!
BTW, I will be up there the week after Memorial Day, and sometime that week, do play to go over and play the courses. You might ask in the pro shop if I am around, depending on your schedule.