That rack will work, but I'd recommend just starting with an appropriately sized kritter keeper for just one crested. That will be easier on your wallet, and after you have some time with your first crested you will be able to decide whether you want to add more to your collection in which case you would need more housing. That said, that the tubs in that rack are only large enough to house single adults--I house adult males, one per tub in a similar rack. One of the large exo-terras is better suited to more than one adult gecko.