Setup Advice?

Hi! i recently just upgraded my lizard’s setup. She now has. 40 gallon that’s 32x20x18! This is what I have for her. She used to be on paper towel but overall I head that’s it’s best to try to get them substrate, so I’m using the Josh’s Frogs desert arid mix.

She had one light but I’m working on getter her another one.. she eats meal worms & black solderfly larvae and the occasional wax worm which I coat in reptivitiams.. she gets food 1-2s a week unless she’s shedding or particularly disinterested (in which she won’t eat much)… Anything else I should add to the tank? Any other vitamins, a or maybe a flat stone to lay on?? What about food? Does she need more than two consistent feeders? (She won’t eat crickets!)