most people in my area just left their oven on and provided alot heat pads but for regular reptiles i dont know what anyone has done for a cham since temperature can drop real low since it snowed afterwards.
yes indeed you need both uvb is for their vision what is red to us might be brown to them, and uva is to stimulate their dijestive system and their behavior.
i think for your first you may want to buy one near you and not shipped,so you can see if anything is wrong etc etc just so when you more experience you would know when and where to buy your next cham cause trust me you would want another lol .hope to see pics soon