Like you, Roy, I would prefer for the snakes to be able to separate themselves in a longer enclosure, but if you add plenty of plants/ground cover to the 2'x2'x1' enclosure, it would serve the same purpose and be just fine. They could also stretch out diagonally in the square enclosure. The corner-to-corner length of the 2'x2' enclosure would be 2'9" long (33 inches).

Rick