Thats a pretty fancy cage Double check that all the rocks/marbles are secure so they can't accidently eat any. I'd also think about removing anything they could easily eat like the fake grass and the paper flames on the small box.
Do you have a UVB fluoresecnt bulb too? I don't see one in any of the pictures.
The grass is real organic wheat grass, and the fake plants are large and secure (not a hazard). The rocks etc are glued down securely. They have no interest in eating the paper. Lights were removed for photos.