It's hard when you're being generic - bathing clothes/towel could weigh 5 lbs or less than 1, depending on what they're made of. Mess kit could be a pot and cup, or a complete kit of nonstick cookware with spatula, BBQ fork, and two burner kerosene stove.

Also hard for those of us unfamiliar with the area - what are the temps where you're going at this time of year? Are you taking enough clothes, or too many?
"In the beginner's mind there are many possibilities. In the expert's mind there are few." Shunryu Suzuki