Good article but it's only one man's style.
Yep.
Experience and practice with one's gear, food habits and partners is the only way to be sure.
Yep.
My numbers should be treated perhaps as a starting point, a point from which you fine tune to get your own numbers.
You might consider mentioning that stove fuel is necessary if one is going to boil water for safe drinking. I consider my stove and a some extra fuel as the backup for my water pump.
Good point. Your stove + some extra fuel makes a really good back up water treatment. Boiling is
the most effective water treatment for bacteria, viruses, and other microbes.
HJ