Keep losing weight. I'm at 170 and I've had it. I'm now going to the gym every day instead of once in a while.
I can't dance for crap. I can only do basic stuff. I am trying to learn tap as it's less intense on the full body.
Don't worry about backflips. Do you want to be in an ensemble? Or do you want featured roles? Starring roles? Work on singing/acting first, if you want to be an actor.
The other option is to be a dancer who can act. You'll be in ensembles most times. Perhaps try choreographing or being a dance captain, as well. If you're a dancer first and a singer/actor second, then you'll still have a shot at featured roles in some shows, but I can't think of too many starring roles.
So sing & act first, dance second -or- dance first, sing & act second.
What do you want?
"The Spectacle has, indeed, an emotional attraction of its own, but, of all the parts, it is the least artistic, and connected least with the art of poetry. For the power of Tragedy, we may be sure, is felt even apart from representation and actors. Besides, the production of spectacular effects depends more on the art of the stage machinist than on that of the poet."
--Aristotle