Basically, if I were you, I would still add your keywords if only because they might not be that important at the moment to Google but they might become more important in a month, 6 months or a year.
Evidence suggests that theyĆe not so important at the moment but things change.
Two of the most important things in SEO are:
Keywords in the title meta tag (the text that appears in the blue/top bar on your browser
Keywords in links that links to pages on your site