My body doesn't match my voice and I'm afraid typecasting will ruin any future of a broadway career?

My voice teacher (who has appeared on broadway and is a very respectable critic) says i have a fantastic voice but it doesn't match my type. I sang stars from les miserables and she said that obviously im never going to be singing that even though i have the voice for it. I'm 17 and I have a very deep and rich baritone sound. But I'm not very tall (about 5'7") and I don't have a very big build. She said I was more of what you'd expect the sidekick or the comic relief to be from appearance. But the problem is my voice doesnt sound that way and I'm not a tenor. I want to pursue a broadway career but I fear that I won't get any work. Is it likely that ill grow into my voice and get bigger or taller? Will my voice change any more through puberty and will i become a tenor? What can I do to give myself a better chance?