After giving this a little more thought, it occurred to me that racks this size wouldn't be able to fit through any doorways since they will be over 3' wide. So, I think I have decided to just build individual melamine (possibly PVC) enclosures for the tubs and stack them. Then it also occurred to me what a huge pain in the ass it would still be to move them when it comes time to move into a bigger snake room, because they would all be wired together, etc. So, I guess what i'm going to do is wire them in a way that will allow me to "quick connect" the wiring for each enclosure in the back. This way I will be able to easily and cheaply build and add new enclosures as needed, too. This seems like the all around most feasible way to go... What do you guys think?