I can not tell you exactly how long it will take you, because some niches are more profitable than other, the same goes for the sponsors (cams are bringing more money than the paysites) and other things that I did not mention.

I can only tell you that the amount you have given is not that big to earn, but it can take a few months or up to a year or even more, it depends how good you are at all the important things like working on the search engine optimization.