why don't you ask atikokan outfitters if they would provide the services you want - I'd suspect that for the right fees, they could find sherpas for you - try CanoeCanada.com  adn see what they have to say.  if they don't do that, maybe they know of someone who will

more or less as a an "assistant guide" (we didn't pitch people's tents, but did everyting else - no portaging involved, especially with a 400# freighter canoe), I used to work for a canoe outfitter in Colorado - he paid me a $100 per day - you could expect to pay at least that for each of one or two "sherpas" i'd think, and likely a lot more