John, I think he was just asking if this was possible. As you say, some people do.
This is my problem with strict weight definitions for packing. SUL only includes your base weight. If SUL plus consumables is used for a definition, then everything that is used up can be excluded. Food, fuel and water are normally excluded. This could also exclude soap, AM drops, spare batteries, etc. Pack weight of 13.25pounds is good for any time, and *could* include SUL. Another "undefined" item is what you are wearing and what is in your pockets. Even pack weight does not pick that up, soo some use FSO (from skin out.) But, looking at his list, his pack, clothing, sleeping gear, shelter, cooking gear, etc all add up to around 8 pounds, I stopped after that, realizing what he was asking. I think you might have misunderstood also.
I agree with the others, more fuel and more water would be a lot better.