For a divided T8 usually a 40w from reptile basics for each side will work depending on room temps. Like above said you can also contact pro products, they are a little more expensive but a very good company. I use both reptile basics and pro products rhp and they work great. From what I read (correct me if I'm wrong) it sounded like your going to use uth and rhp together? You only need one rhp for each snake, the rhp will be installed on the left side or right side of the ceiling of your snakes cage and it will heat both the hot and cool side so there's no need for a uth also.

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