Hello my friend.. Try not to over think things! Sounds like you are doing just fine with things!!! Are you going to move him into a bigger glass tank or plastic tub? I personally am using 28qt tubs for both of my Boa's right now along with heat tape. They have been thriving and have good sheds every time. Remember, boas like a cooler temp and do not require high humidity. As long as you provide a proper size tub with enough space for him with a hide, water dish, appropriate substrate and good thermostat then he should be alright. I made plenty of air holes in my tub so that there is significant ventilation into the tub. Depending on the tub size, you could use 4" or 6" heat tape and I would definitively stick with the flex watt kind (which you can get from Dinos reptiles). I know it can get a bit confusing and a little stressful because you just want the best for your little guy and everyone has their own ways of doing things. Just take everyone's advice like a grain of salt. Just because one way may work for one person doesn't necessarily mean it will work for you. BTW, try to get out to the CRBE coming up in September.. it will blow your socks off!