Baking is a lot of fun. If you get into baking, especially for a whole year, you just wouldn't want to be limited to the narrow range of stuff on that site. Also, you can't make baguette in a bread machine. So what's the point?

If you just want carbs for a whole year, rice is easier than wheat. It can be stored for a long time (apparently up to 10 years). You don't need to grind it or add yeast. You just need water and heat to cook it. It's also cheap. Just go to the nearest ethnic market and grab a bunch of those 50-lb sacks of rice. Just watch out for bugs in storage. But maybe you'll welcome the extra protein?

For wheat, spaghetti is easier to deal with than baking bread. Is it nutritionally about the same? Maybe someone here knows. You can buy it in convenient 1 lb packages almost as cheaply as in bulk, and it stores very well. I have been wanting to try some powdered tomatoes for making sauce.

Dry beans cook fairly quickly in a pressure cooker. Combined with rice you get complete protein. So I'd go for a few sacks of those, as well as rice and other things.

Whole wheat will give you fibre. Spaghetti from refined flour not so much. That is a significant nutrional difference. Products from whole wheat flour tend to go rancid. So keeping the grain and grinding it when needed is better.
Also grain is more versatile. It can be ground to different degrees of fineness used for baking or making pasta. Pasta is just pasta. When you get tired of it, there is not much else you can do with it.
I store grain. I have a different supplier though as I live in Europe.

I don't think grain is a good food for humans and I avoid it as much as possible.

Their "food for a year" is nothing but bread? Are they nuts?

They will send you their bread recipes for $50. I wonder how many different recipes they can come up with for wheat, salt, olive oil, honey, lecithin and yeast?

In Germany there are about 3000 varieties of bread and rolls registered. I will admit that not all are wheat only and a lot of recipes are available for free if you do a little research.

Peanut butter