Building a progress indicator
You will need to measure the progress of your research.
What gets measured gets done!
You can measure your progress as a percentage coverage of the number of individuals identified over the number of individuals to be found.
If you add the fact that for an individual, you have set a level of depth of information to be found, you may prefer the percentage coverage of data found.
If your goal is to go back as far as possible on the paternal line, your indicator could be the oldest year of ascent for instance.
Ancestris has a report that allows you to view the level of search completeness by generation and easily see the "holes" in your quest to orientate your investigations.