The first answer to this in my view would be, “how many back links are pointing to your site presently, and over what period of time?”
If you have only 100 back links pointing at your home page, and this has happened over the a 2 year period, then I would suggest taking it slow and maybe create 50 in the first month and 80 the next and so on. This will look natural to the search engines and will slowly build page rank, and your position in the search engines.
Steady as she goes is the concept to grasp here, and the results will come.
So in summary it all depends on the history of your site as to how aggressive you will when creating those all important back links to your site.