I think you're probably over-thinking the sugar issue, whitecrook. Caster and granulated are pretty much interchangeable without altering them.
Saying that, I think there is a lot on that list that is superfluous. For instance, I can't think why anyone would need both "rice" (long grain I guess?) and basmati. Similarly, there's no need to purchase english mustard when you've already got english mustard powder.
The average domestic kitchen doesn't have room for hundreds of ingredients in various different forms. I think part of the art of home cooking is making the most of a smaller number of ingredients with good results. Understanding what something does in a recipe allows you to be able to substitute out an ingredient you don't have for something you do.
The bottom line is that I think that if Rizo gave that massive list to his mother/mother-in-law, they'd probably think he was taking advantage of their generosity and I'd wager over half of them would sit in the back of his cupboards for a year until he had to throw them out to make room.
PS: Tabasco!
