I think your set up looks pretty good. There are a few nitpicky things that could be argued for or against, but if your snake isn't stressed and continues to eat regularly for you, then all is well. BP's are primarily nocturnal and I'm sure you will see him roaming a lot more often when it is dark, but it is not totally uncommon for one to come out every now and then during the daytime. Much props to you for getting all of those digital temperature and humidity instruments!