Sounds good to me, cowboy. Prepacked modules are something I swear by, be it EP or IT. I put all the cables needed, a mouse and a keyboard in a big plastic bag at work, and call it a set. At home, I do exactly what you are except for the water, and that's just becuase I have a couple of decent sources, even if they need boiling.

And that is for the normal groceries, btw. Nothing like getting set to make your really spiffy casserole, only to find out someone snagged your topping for a snack, becuase the components weren't labeled at a package.