A few other things to take into consideration when housing snakes together.......
1* Snakes are solitary animals and only come together in the wild to breed.
2* You won't be able to monitor the animals indivdually. If there is a regurgiation or defecation you won't know who it came from.
3* If one gets sick with something contagious, the other inhabitant/s of the cage will be infected.
4* You cannot just throw their meal in the cage, the snakes must be separated for feeding, and carefull placed back in after they have calmed down, as they may still be ready to strike and contrict any movement around them.