it looks good, i would place at least one hide close to both UTH so he has one cooler thermal regulated hide and one warmer one. since BP's don't really bask and during the day the hides is where they will be most of the time.

to make you BP feel safe in that large tank your going to need to fill that tank with allot fo stuff he can hid in and generally feel unexposed in. such as some plants and sticks, fake vines with leaves. and then you should be set.