This baby is only 3 months old. I have never used a basking light with Camille I got her when she was 5 months old. I keep her hottest temp at 80 to 81. I follow the Raising Kitty the female veiled. Here's the part about the temps and basking light:
I have double fluorescent hoods over the cages. (in my case over the trees since I free range) Each hood houses a tube/linear Repti-sun 5.0 and a regular white fluorescent tube light. This maintains the temperature in the low 80's at the warmest end of the cage. You can see the setup in my article in the e-zine: A Babies first weeks. The shelves can be moved forward more than is shown in the pictures in the article to allow for more of a gradient in temperatures and more air flow as well.
Most of what is in this article is still current but I have made a couple of changes.
I maintain the same lighting and temperature range when the females are moved to their adult cages. I do not use a basking light, but continue with a double fluorescent hood keeping temperatures in the low eighties. The cages are of various sizes, but the smallest is 24" tall x 24" wide x 18" deep.