Hey! =)

I'm also new to the BP world and have been playing with my setup over the past week to figure something out that works for me and my snake. I have a smiliar size tank and UTH as you do and this is how I have my tank setup.

1. UTH under the hide on the hot side controlled with a rheostat for now (herpstat is on order)
2. CHE is above the hide (hot side) to control the ambient air temp
3. Water bowl is towards the middle of the tank to allow a bit of extra humidity being closer to the heat source. After reading many of the posts on here I also added several layers of tinfoil to a section of my mesh lid and taped it, brought my humidity up from 40 to 60.
4. Identical hide on the left side of the tank to allow my little guy to thermoregulate himself if need be.

With this setup as of tonight I have an air temp of 85, 88-90 on the hot side under his hide, 80 under the hide on the cool side of the tank and humidity bopping around 60%.