My group of two looks a little different, a father son gig-and the boy started at two. Single portaging just was not a possibility; and that is and was a good thing. The portage trail is a fine place to see the other half of what makes the canoe country so great, a gem; the land between the lakes and waterways. Since your group seems to have evolved a bit maybe the "goals" could too; 11 days of food and consumables seems a bit on the stout side to single...so do you know what the food pack is going to weigh yet....seems like the weight will make the answer to the question a no brainer. If eating "good" on the trip is a goal it will push you all hard away from the "single" endeavor. I could be done but it would have to be a primary goal, and a lot of other things will get pushed aside...just sayin'