I'm getting one soon, this is some of the things i have been told.
That size should be ok, for substrate kitchen roll or newspaper when young. Locusts, crickets, mealworms for live food.
Supplements, dusting livefood with nutrabol twice a week and komodo cricket dust (calcium powder) about 5 times per week.
For viv, shallow water dish, small lid for calcium powder, small cork hide, heat mat 12 x 12, habistat mat stat, branches and fake plants, a moist hide with some spagnum moss or damp kitchen roll in it.