I'm currently only an admirer and have yet to actually get my own snakes, so feel free to disregard. But I fail to see any pros in housing multiples together for non-breeding purposes, aside from saving a small amount of time and money. It only creates issues for the snakes themselves (stress, transfer of sickness, fighting, etc) and owner convenience really shouldn't come at the cost of the animal's comfort.
If you're planning on housing them together, you might want to do some research on that and decide if that's really the best way to go if you want the maximum amount of comfort for them.