Nice route!
We're hoping to be in the Winds during that time too, overlapping a small segment of your route (but in the opposite direction). Small chance we could run into you near Titcomb, although I think we'll have probably just missed you. Our route turns north from there.
I hope you can get a partner - that's challenging terrain (and route finding) from Glacier to Titcomb. But an ideal area for viewing the eclipse - lots of great vantage points in the area.