I have 2 adolescent boars, that are currently in a 2x4 cage. Since they've recently not been getting along I'm planning to rebuild their cage. I don't know whether to make a 2x6 cage, or a 3x5. A 3x5 will offer wider room to run laps, but a 2x6 will give them more room to get away from each other. Which one would be better? Or would it even matter?