Schema.org and GoodRelations.org integration

Thinking of a WP deployment for a new site but need to figure out if it’s possible to deploy the schema.org and or goodrelations.org code into the html code of WP. I’m experienced developer and have done the code outside of WP on html5 sites. However, I only have a few WP blogs up for clients. A website is ranked higher in seo with schema codes and creates snippets, read quickly by Google’s search engine- thereby making higher ranked sites appear very quickly. I have used Yoast SEO in all my WP blogs. Yoast is good but I’m not sure it’s good enough for top ranked site optimization that is given by Schema. I’ve just figured out how to hack code into WP themes with css but php is out of my realm. Any thoughts on how to deploy the code within WP html? Is it necessary?