your hearts in the right place but for a bp this is a bad idea, doing anything aquatic would spike your humidity and the enclsoure you wanna make is two small for all u wanna put in it, if u wanted to so somethin like this pick a diffrent species like a yellow anaconda or something.

oh and its a bad idea to give ur bp anything higher then a few inches to climb on cause there clumbsy and not the best climbers and can get hurt from a fall