I went from North Bay to Sunday Lk. in 2015. It's an adventure for sure. If on the wet side be prepared to portage in mucky conditions skirting the creek. My 17 year old nephew had a full length hiking boot come off in 1-2 feet of boot sucking beaver barf.
Also, don't try the tiny creek that goes along the way there unless you enjoy this kind of activity.
Good luck!