Tha Early sundown and possible times of snow squalls and changing weather will be possible your biggest factors. It has already hit 32°F in the BWCAW. September weather patterns are all over the map. From 70° windless bliss to 15° driving snow. Be prepared for either. Your route is attainable with good weather, equipment and Folks that work together well.
Canoe Pack Liner
Pull-Up Strap Handle Kit