a heating pad is completely necessary! Leos need belly heat to digest their food and if they don't have it, they may not be able to go potty! i'd put the heating pad on 1side of the tank so your Leo can get away from the heat if it wants
a heat lamp isn't really necessary unless your room or wherever you are keeping your Leo gets cold... i don't let my tank's temp go below 70degrees Fahrenheit... i use Night Glo 74watt Neodymium Moonlight Lamp with a dimmer setup... it doesn't get too hot for my Leos, it doesn't upset their eyes, it doesn't cause digestion or skin problems, and the Leos can't even see the blue/purple rays that come out, so you will have to find a different way to provide a day/night cycle..... i would highly suggest you do more research if you didn't already know the answer to this question! feel free to e-mail me
i own 2healthy Juvenile Leopard Geckos and they couldn't be in a better home... and if you're going to get a Leo, then you had better take proper care of it! i highly recommend you e-mail me!