Research search for search engines

Need someone with the skills to find information I am looking for. I am building a search engine to compete against Google. The normal way to do this is to collect all of the websites on the internet. The problem is the cost of storing the data is to expensive. I need to apply the 80/20 principle. 80% of the visitors will be served by 20% of the data. 80% of the data will be needed for only 20% of the searches. I need the researcher to identify which is the 80% of the data that I can prune from my data collection system. And the 20% we need to collect. You need to be good at finding answers about what makes a good search engine.