I love bonsai, currently the only cages I have them in are my williams geckos. My chams would destroy them. They are wayyyy to hard to come by in Montana. I treat mine like the jewels they are. But what you are doing should work fine. I would love to see pictures.
i wish i had taken a pic of the ficus before i started trimming and
twisting and tying the branches.
hopefully the red wire i am using will show in this pic.
the scheflerra i still can't find a picture in my mind of what i want to do...