Baby guniea pig

I can provide a mini booklet guide for the guniea pigs requirements.
-It needs a cage atleast a meter wide
-The cage needs to have hay, pellets a food bowl and water bowl, as well as a few places to hide for comfort.
Note: I am able to provide all of these for extras costs but you are able to buy them from a pet store nearby.

What they can eat:
Romaine lettuce.
Carrots and carrot tops.
Peas.
Broccoli spears.
Spinach.
Kale.
Tomatoes. (not the stems or leaves)
Green and red bell peppers.
Other dark green veggies.

What they can NOT eat
Chocolate (or anything else containing caffeine)
Onions.
Garlic.
Mushrooms.
Iceberg lettuce.
Avocados.
Nuts.
Potatoes.