If the point of the divider is to house two snakes that’s not going to work with the rhp as the sole heat source. I don’t think a 2 ft wide enclosure will give enough space for a proper gradient.
I house my single yearling ball python in a T10 with a pro product rhp as the only heat source. I have the herpstat set to 88 with the probe dangling under the rhp. The thermometer near the hide reads 88-90 degrees and the cool end reads 78-80 degrees. This time of year my humidity naturally sits around 50% under the rhp and about 65% on the cool end without misting.
Your set up sounds very similar to mine including the use of a herpstat 4. I’d recommend one snake to the T8 and get another to stack on top if you want an additional snake.
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