Adding text under dynamic content

Why we need the change We need more text on the pages in order for google to rank us higher in the organic search results. On our current site we have the solution we are requesting below and google is ranking us high on the words important to us. Adding all the text above the dynamic content will make the user experience not so good. The request - Add text below dynamic content on certain page type This is the theme we now will use ([login to view URL]) On this page type (page with the page attribute "portfolio template") text can only be added above the dynamic content. see [login to view URL] and picture "[login to view URL]" We like to be able to add text below (with both headers and body text) the dynamic content on this page type (page with the page attribute "portfolio template"). See picture "[login to view URL]". Solution criterias - solved so we can still update the theme when new releases comes out - In terms of the adding and editing of the text we like to have a separate field in the page regular editing called "text below dynamic". - Need to work with the theme so that the text is working with the responsive design of the site - Solution may not alter or interfere with the themes design Who we are looking for - English speaking - We like to verbally verify the solution chosen before work is done Looking forward to professional answers