Man, I am amazed that you did so much homework & such a great job before even getting your snake. Thats awesome!!! Congrats on the new one and with the Husbandry your working on your going to have a happy camper....
As far as the space between UTH/Tile/Tank thats good.
As far as the UTH and CHE on the same side thats not good. Use the UTH for Hot Side Basking under hide at 88-91.. Then use the CHE for the cool side ambient of 75-80. Place your Probe around 10" down for a 18" H enclosure.
With this said you need a Accurite Thermometer with a Probe for Hot side temp and then place the Head unit on cool side to measure that along with the Humidity. What the Herpstat says and what the Hot side temp will be are going to be different as is the ambient cool from the Tstat probe reading.
Example- my Herpstat reads 98 degrees on my UTH and once it goes through the enclosure and Paper substrate my thermometer reads 90 where snake touches.
On my cool side the Herpstat reads 85 but 10"'s lower where the snake would be the thermometer reads 78 for cool side..
Sounds like you have great equiptment but a thermometer that has a probe for Hot and the head unit for Cool and Humidity is a must... Here is the Thermometers we all use and also a link so you see how we set them up.
https://ball-pythons.net/forums/show...-With-Pictures!
FREE SHIPPING at LOWES. Amazon charges more because everyone knows people use them for reptiles now.
https://m.lowes.com/pd/AcuRite-Digit...meter/50425266
-..... And welcome to the site/hobby ect....
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