I moved my childrens python over to a what will eventually be a bioactive mix and love it. While I didn't do any plants I did plenty of rocks and cork flat hides. I used a mix of organic topsoil (make sure to screen it out, I had one bag that was perfect and another that had bits and pieces of plastic in it, some play sand and instead of coconut chips get some organic peat moss and mix that all together, then on the top I threw in some dried spaghnum moss and leaf litter. I have yet to add any bugs but once the setup is done it is low low maintenance and my snakes activity level greatly increased. I did have to thin out the substrate a little bit when the heat mat is because 6 inches of dirt is hard to heat up. Here is a few pics of the cage he is in. I think I made the substrate switch over starting on page 9: http://ball-pythons.net/forums/showt...pic-post/page9
**For lights, since its a BP you might just want to look into LEDs or a flourescent tube light from a hydroponics store that will help the plants grow, but not put off any extra heat