If the animal you're getting is a yearling or smaller I wouldn't put it in the cage it's going to need when it'll be full grown. A small snake and a giant cage can stress the animal. I've had an 8x4 cage for a burmese a long time ago, but i don't have any pics unfortunately. The 8x4 cage seemed to be "about" the right size for an adult. My advice though, would be to start small and work your way up to full grown cage as he/she grows. It will help make the snake feel more secure.