Hello and Welcome to the Forums!! You will need a basking light. A regular incandescent light bulb of 75 watts will do the trick while he is a baby. I suggest getting a thermometer for your enclosure to make sure that your basking temp is on point. You will need a UVB bulb for sure...hopefully a linear fluorescent and you will also need a grow light because I know that you are planning on stuffing that enclosure with loads of live plants for the new addition. If you go the Sponsors Page on the home page of the Forum, you will find a company called Light Your Reptiles. Todd has everything that you will need as far as lighting is concerned on his sight. Here is a link that can give you great information as well.
https://www.chameleonforums.com/care/lighting/