Not happy with plants

I couldn't tell which would be the best forum to post this in but I'll try here. When I made my chams cage I found a Dracaena that was just the right height (I couldnt find a ficus or Hibiscus the right size). But now the plant falls over and is just plain annoying to deal with in the cage... Would it be a problem to change the plant inside my chams cage now and leave the vines the same?

Go for it! Find another type of plant to replace it. I've had plants die or not do well, and I've replaced them. Your cham will be stressed with the change, but that's to be expected.

I am using a Schlefferla (umbrella plant) in my enclosure, seems like it's commonly used and IMO it works great!