When trying to get the best keywords to your search engines think like your client and seo expert. Look into what potential prospects will likely put into a SE so that you can find a site like yours.
Pay close attention to Internal Linking Construction in your pages. This will help search engines determine which pages are of the most significance on your site and can increase your rankings on those pages. Do not be too focused on keyword density. Today, latent semantic indexing (LSI) could be the main thing to consider. Many search engines do not count keywords anymore.