If you want a clear lightweight tank, yes. There is always steel and aluminum options.
I have the 17lb tank and use it for small and medium groups. If you only use it for cooking, boiling water, and light then it should work for a group size of ten for a week. You can always bring a few spare pounders for emergency..
We usually bring two tanks and return with them half full
Hey, if you want me to take a dump in a box and mark it "guaranteed", I will. I got spare time.