Welcome to the forum!
For the enclosures I would have a look at the threads in this section:
section. You can find quite some nice enclosures there. I personally keep couples in 100x50x50cm enclosures with some nice possibilities to clime a bit. Whatever you do, keep in mind that the bedding needs to be dry. You may have quite a large waterbowl, but a wet bedding will bring you into trouble with your snakes.