Vinny.... that cage looks GREAT!!.... That was a smart idea about the 1/8" space instead of holes....
In your store, you will be selling a LOT of heat light bulbs and strip lights.... you might want to stock up on different wattages of those.... also, bedding of different types and wood pieces and waterbowls of all sizes for decoration.... I sold tons of those items in my store.... You should TRY to stock every live food item you can.... pinkies, fuzzies, mice, jumbo mice, rats of all sizes, rabbits, crickets, mealworms, superworms, fruitflies, and a lot of dry food for all types of animals and the Calcium and vitamins for them, too....
You should do very well with all those kids around.... do yourself a favor, though.... if the kids are UNDER 18.... MAKE SURE you get approval from their parents, because in NY, a MINOR can CANCEL a "contract" at any time up till their majority.... which means if they want to bring the animal back, you HAVE TO give them their money back if they're minor's.... BY LAW!!
Good luck, and make a fortune!!
Neil