Basking spot and UVB

[Hugsplox]

I think that is overkill.

A UV while you say there is no reason not to the reverse could also be said, there is no reason to. I have a UV over my Ball tank but that is because it has plants inside....not for the snake. She is hardly ever out when that light is on.

As to the RHP and a heat bulb. I think you may be underestimating how well a AP cage will hold the heat. One or the other is all you should need. Unless you are dealing with some really cold temps.

100% agree with KMG, I think adding all this extra lighting is going to increase your temps and cause more harm than good. UVBs don't typically get super hot, but they do raise ambient temps a bit and as KMG said, you may be underestimating how well that enclosure is going to hold in all that heat. I would suggest just getting your enclosure, putting it together, and seeing how your boy does in there. You can always add equipment later but I don't see a point in spending money on equipment you don't need.