Is my new BRB tank too big?

[Ouroboros]

I got my Animal Plastic T3s in this last week and finished setting them up. One of them is housing my 4 year, 4.5' 1800g BP, and the other is supposed to house my 2 year, 4' 520g BRB. The footprint is 36X24.

Is this too big for my little BRB? Should I be keeping him in the tub I've been using until he gets bigger?

The husbandry is way easier to maintain in the T3 with the RHP and Flexwatt Belly Heat Pab, and I have three separate hides (all small enough for him to feel secure in), but I'm worried that he'll get stressed from the tank itself being so large at this point in his ontogeny.

Thanks for reading guys!