I know you are joking, now 
I had food for both of us for 72 hours in my ruck, in addition to the tent, my rubber biatch, mess gear, 3 gallons of water (above and beyond the 2 quarts on my hips), revolver, hatchet, tinderbox/firestarter, extra pair of boots and 72 hours worth of clothes, etc.
When you absolutely have to carry a truck-load of crap, a large ALICE pack is the Cadillac of rucks. 

Don't know what you're on about with this "Cadillac" stuff. Fact is there are hundreds of packs out there that are bigger, lighter, more comfortable, more practical, more durable, and just better then the ALICE system for what you're doing. The ALICE system was great for the military in the 1980s, but there are much better solutions nowadays. There are many, many internal frame packs that could easily fit everything on that ALICE on the inside, and be lighter and more comfortable while doing it.
I've worked as a backpacking guide in the Wind River range Wyoming for 7 summers. And trust me, the kids who borrowed dad's old external frame pack from the 70's or 80's for their trip, always regretted it. Frame squeaking with every step, half their gear banging around lashed to the frame and falling off every mile or two, no load-lifter straps and no torso adjustment means the load never fit right, wearing them down, frame rubbing into shoulders, pins that hold the bag to the frame breaking. A good, proper fitting, properly loaded pack on trips like that is the difference between misery and ecstasy.
In my mind the ONLY thing external frames are good for now days is big game hunting, when you just need a bare frame to lash a quarter elk or deer to.
And why on earth are you carrying 3 1/2 gallons of water? That's over 20lbs man.

Where are you camping, the Sahara?
Now I'm not afraid of roughing it, I've even been through a 2 week survival course in the Southern Utah desert where I wasn't allowed ANY pack (just a tarp and some rope). But given the choice, why be miserable? I'll take my nice high-tech, ultra-light, modern backpacking gear any day.