I'm trying to clean my pantry

OMG, who wants to come over and have Hamburger Helper. I can't believe there are five boxes of that stuff (trying to keep it clean, DS does occasionally enjoy HH). My pantry is a closet with a really weird configuration at the top. I'd swear it was under the stairs, but it's not. So, either there are stairs within the walls going places I cannot imagine, or it's there for some reason not readily apparent.

Since I don't have issues with trust, I'm going with not readily apparent.

One side is about 7 inches tall rising over a space of about 28 inches (the length of the shelf) to about 30 inches.

From Pantry

Here's the rest of the pantry:

From Pantry

From Pantry

So, I'm thinking a shelf about 6.5 inches tall. Then, I was thinking clear stackable containers for the beans, rice, pasta, powdered sugar, brown sugar, regular sugar (hey, DD loves to bake); etc. But the shelf is probably 14 inches deep; so if there's a shelf over the containers, would I be able to get them out; or would it not be a big hairy deal to just double stack them. I would be able to see the contents, because the shelves are wire mesh, so I could just look at the bottoms through the shelf. Then, I could use the taller side for stuff I don't take out of the boxes.

Lots of great places on the internet for this, but if you've got any recommendations on containers, please share.

Here's what needs to go back in there (and now would be the best time, since I really need to start cooking supper):

From Pantry

From Pantry

and yes, that's a 5 pound bag of grits. I love grits, but I think at my current rate of consumption, it'll take 5 years to eat that much (WWIT??)
and there were a couple more of the other counters, but I don't appear to have uploaded them. What a loss to the greater world of photography.

So, help! And thisof course, now brings me to the real question. Why the hell does someone who cooks as rarely as I have all this FOOD!