Rob,
When I first wanted this career many years ago it was my Dad that stood behind me all the way. It was others who said that I was dreaming and should think of "a more realistic career" (not exactly the same I know). But the point is....... I studied hard, just like you will. Eventually I proved to those that doubted me that I could make it. If you want it hard enough it will happen!!
I am now an FO flying a Jet, with several years experience behind me.
Moku.