How many people? How much canned goods do you have and how much do you use them?
I try and get people to look at 1 week, 1 month, 6 months and then a year.
The biggest thing people forget when planning food storage is the little stuff. Spices, mixes, gravy's, and dairy items need to be looked at. Having a bunch of rice and beans is great but you have to have something to put on it.
TP,meds,etc. Too many forget about other needs beside just food.
Don't pick a fight with an old man. If he is too old to Fight, he'll just kill you.