The humidity has risen to over 90% so that CHE will actually be doubly useful (but if it's still too humid even after I install it I can simply remove some of the aluminum panels as I had the foresight to cut them into separate pieces). Also forgot to mention that three of the tank walls have foam board for privacy and insulation (on the outside of course). And when I do need to bump it up I bought a dedicated spray bottle for that exact purpose.
And I already had a backup plan and am talking with the breeder from Dynasty Reptiles (who this forum has given their blessings) and he's been very responsive with my questions and provided current photos of the snake today (2 month old male banana that has quite a bit of orange on him). In fact as I was typing this I paid for him, but he's currently in shed so I requested that he be held until he sheds before shipping so he's not under as much stress from the trip, which works out perfectly since the CHE comes in on Wednesday. The breeder will alert me when he sheds and is ready to come home. So excited!
Also I cut a couple apple tree branches since I know males like to climb sometimes. Whittled down all the sharp points and stripped off any bark, sandpapered smooth, washed and are currently being baked for sterilization.