Thanks I missed that!

the tub size will work, they hold humidy well but not heat. They cool off very quickly and heat quickly.

A custom enclosure around the 24x24x12 or 18 inch range holds both humidy and heat but costs a lot more. At least you can see into it. The snakes hide but a captive enviroment can be made that is pleasing to look at.

Tanks are harder to balance the temps and humidy but are cheap and look good too. They take more fiddling.

read the care sheets and plan what you want a simple time set up with a lower cost that is space efficient. A elabourate easy to look after enclosure, or a inexpensive tank that needs a bit of effort to get right. Planning ahead is very important, the enclosure should be set up for a week or so with out occupants so you can get the temps right with out concern for the occupants.

Good luck
Alex