Look like you got the exact same setup as i do. LOL I would start with a baby ball python. And you can probibly start with the 90qt but be sure to put lots of hiding places and some fake vines for them to hide under and pass from hide to hide unnoticed. It is preferable to use a smaller sterilite but i would keep the 90qt and and buy a smaller one and use either one as a feeding bin.

It look like you are off to a great start. It makes me feel happy when someone puts everything together before going out and buying a snake. It shows real maturity on your part. I foresee that you will be a great keeper for you new pal. Welcome to Ball-Pythons.net. If you have any other questions please dont hesitate to ask.