Gotcha. Although i know you're no noobie, I always advise people get the animal they want rather than an animal to fit an existing enclosure. Tubs are relatively cheap. I personally wouldn't eliminate certain species cause I had the tubs. The tubs are just a box, the animals are what's important.
I'm sure the tubs could be sold since they're quality RB tubs. But again, I'm not a tub guy so just a thought.
But that's me, and my two cents. Good luck with your decision