(I divided the wheat and rice in half and added other grains to the total just because I have such big eaters at my house.)
I found if I use some simple functions in excel, I can easily inventory and keep track of what I have and what I need. I have the totals broken down into 3 month amounts. I started off by gathering a 3 month supply of each item. Once I had this, I started working up to a 6 month supply. Next I will work to 9 month etc. until I reach the year supply goal.
Here is part of my spreadsheet...
|On Hand||3 mo.||6 mo.||9 mo.||12 mo.|
|Total|| || |