I am not sure what UTHs are, but the rest of what you described sounds great! There is a freat list of cat foods pinned under the Diet and Nutrition section. Nearly any insects you feed your herps will be fine for a hedgie, though some are fattier than others. My boy likes mealies, crickets, rissing roaches, waxworms, etc.
Welcome to HHC!
Welcome to HHC!