Method to fast Ranking for low competition keywords.

I have a web site for tours & tour packages according to Site analyses Software there are many duplicates titles and description .So now in the process of making all the errors correct. already around 1500 pages indexed in Google.keywords competition from 135000 to 2400 respectively.still not any of keywords ranking for top 100 result in local search .already created Google place also.

So i wanna show to my client few lower kws in 20 days in top 100 result at least .looking for expert advice ,