This question brings to mind that tale of a student approaching a great master and asking how long it will take him to master the art. The master tells him it will take at least ten years. This seems like ages to the young student, so he makes it clear that he is willing to train day and night. It would therefore take thirty years, the master replies. The student stresses that he will spare no effort and apply himself every moment of his life. In that case, the master replies, it will take you seventy years to master the art.
Now, I'm not saying it's bad to be focussed on a particular objective, but I think it's important to aim for what the belt represents in terms of skill, maturity and spirituality, rather than just the belt itself and perhaps the kudos it receives.