Not sure what you're asking with "what should we see", but for hatchlings like that you can use a 10 gallon tank or similar-sized Rubbermaid-type container. However, it is absolutely preferable that you house them separately. It's not as if they'll fight, but they will compete for the best place to thermoregulate and if one snake gets sick it will be harder to tell which it is and possibly less needed because the other one will likely get sick as well. There are a number of good substrate choices, including the cypress mulch, but if you use a loose substrate like that it's a good idea to put newspaper, paper towel, reptile carpet, or something similarly solid as a bottom layer in case they decide to burrow (as they sometimes do).