Hello and welcome to BP.net! =)
For babies and juveniles, a big cage will be, like the others said, a little scary for the snake, which could manifest itself in stress and eating problems. Ball pythons love nothing more (well, other than a mousey when they're hungry!) than stuffing themselves into a nice, dark, tight place, which in a captive environment, we call a hide.
And while it is true that the more "stuff" you put in the cage, you will have to spend more time cleaning everything. However, there can certainly be a balance and as long as you commit yourself to the thorough and regular cleaning and disinfecting that is required, you can set up a lovely display environment for your bp.
Have a look at the following guide for an idea on setting a glass vivarium.