Nothing is crazy. I believe that as cliche as it sounds, it depeneds on how bad you want it. If you put your blood, sweat, and tears into it, and train like you mean it over the winter/summer, you could place podium at least once next racing season. Also assuming you have a level of fitness to keep up (ie. don't smoke, eat healthy etc). But I'd say that if you took training seriously, you will see a lot of gains in the next year, and after racing next season, you'll learn a lot about how it's done, and by the 2014 season you'll be a contender for sure.
Ps. I believe you mean 'zero to hero'?
