Hi there. Ok so from those angles it looks like a little female. But to know for sure I need a side view and as close as you can get like these... A male will have a tarsal spur like in the pictures and a female will not.
For the enclosure and set up this is going to be a learning curve so I want to start you out by going here and reading everything in this husbandry program. It will allow us to assist you better because you will have a base of knowledge.
https://chameleonacademy.com/chameleon-husbandry-program-getting-started-with-chameleons/
You will have quite a few changes that need to be made quickly such as UVB lighting needs to be switched to a T5HO linear fixture with a 5.0 or 6% uvb bulb. The compact screw in bulb your using will not work for a chameleon as it does not provide the levels of UVB the cham needs.
Also feeding a baby this young would be taking down a minimum of 2 dozen small feeders a day. So your wanting crickets that are no larger than 1/4 of an inch.
Once you read through the husbandry program let me know and I will post a husbandry review form for you. This way we can review every aspect including supplements.