There are Urban Legends of people on these forums, how have done it and succeeded.
To be honest just checking many of my old PM's there was many who wanted to do it, but after short time never returned to flying in this context.
I would say, if you have a burning passion, like hell fire for this, then do it, because that will never go away. That is my excuse. However if you just day dreaming, and you bored with your current life, do the PPL first, fly a bit for fun, because it might not be more then just that what you want or need.
Have heard stories of PPL's getting into pretty scary situations, and never ever want to fly again. Try before you buy, and good luck.
It is possible, but how much can get in return, we will never know.