Store 5 kgs rice
Store 10 kgs rice
I put some information up on the different types of varieties of rice up in week 6 of this challenge, when we first stored rice here: http://denleydiaries.blogspot.com/2011/02/week-6-of-2011-food-storage-challenge.html
You might like to store 4 kgs of long grain rice, and one of risotto rice. I like to store some Calrose rice to make rice pudding just to vary our diet (and to use up some milk).
You could also store alternatives like Sago for even more variety.