Quote:

Food for 2 people for 11 days should weigh ~25lbs. Total kit for 2 people should weigh ~50lbs.

:-?  If you substitute could for should, I'd agree.
Food Pack and Kit weight will vary wildly, depending on tripping style and amount of creature comforts desired.

If total weight is your main goal, then you can probably go even lighter if you desire. I'm thinking that after having 6 paddlers, even single portaging, your going to miss the gear you've become accustomed too ;)