Congrats on your new king. They're great snakes to keep and not very hard to care for at all. First things first, please get a thermostat (not a thermometer) to control your UTH temps. That's going to be crucial. A heat lamp isn't necessary, and can draw humidity out of the air, but I do use a low watt infrared bed to bump up my ambient temps a little during winter. I use a dimmer on the lamp as well. I keep my warm side around 86 and my cool side in the low-mid 70"s. You'll also need hides on both sides of your enclosure. Throw in a water dish and some fake plants and you're good to go. Please share pictures of your snake and setup when you can. Best wishes.