If you decide to float the Cascade, especially the upper section I think it would be one of the most epic/great floats you could find in the NW, youll put in at the 2nd bridge after minerial creek campground, with a map youll find it pretty quick. Leave your shuttle rig at minerial creek, you do not want to pass this campground, its followed by constant class 5 water with a great chance of finding sweepers crossing the river, not many people raft this section and it has claimed a few lives. But the 2nd bridge to campgound would be fantastic, what dates were you looking at?